BOTANY 11) Pericycle forms semi-lunar patches of

1) Pericycle is not seen in sclerenchyma cells in

1) monocot stems and dicot stems 1) dicot roots
2)monocot roots and dicot roots 2) monocot stems
3)monocot stems 3) dicot stems
4) dicot stems 4) monocot roots
2) Bulliform cells found in grasses are 12) Mesophyll cells are divided into palisade
1) large, empty, pigmented, abaxial epidermal and spongy parenchyma in
cells 1) grass leaf
2)small, empty, colourless, abaxial endodermal 2) monocot leaf
cells 3)isobilateral leaf
3) large, empty, chlorophyllous, adaxial 4) dicot leaf
hypodermal cells 13) The innermost layer of cortex in dicot roots
4) large, empty, colourless, adaxial epidermal cells is
3) Root hair and trichome both are 1) bundle sheath
1) always unicellular 2) endodermins
2) branched 3) pericycle
3) epidermal outgrowths 4) hypodermis
4)responsible for preventing water loss 14) Presence of water-containing cavities in the
4) Casparian strips are found in vascular bundles, is a characteristic feature
1)epidermins of stem of
2)pericycle of stem 1) Monocot stem
3) endodermins of roots 2) Dicot stem
4)epidermis of roots 3) Monocot root
5) When xylem and phloem within a vascular bundle 4) Dicot root
are arranged in an alternate manner along the 15) Leaves of some monocot plants curl inwards
different radii then it is called during very dry weather. Select the most
1)conjoint vascular bundle appropriate reason from the most
2)closed vascular bundle following.
3)radial vascular bundle 1) Flaccidity of bulliform cells
4)open vascular bundle 2) Shrinking of guard cells
6) In dicot leaves, guard cells 3) Shrinkage of air spaces in spongy mester
1) contain chloroplasts 4) Presence of more stomata on adaxial
2) have thicker outer wall surface
3) are dumb-bell shaped 16) A common feature shared by monocot and
4) enclose subsidiary cells dicot leaf is that both have
7) In a dorsiventral leaf, the vascular bundle is 1) Bulliform cells on upper epidermis
1) radial and closed 2) Differentiated mesophyll tissue
2)conjoint and closed 3) Cuticle on adaxial surface
3)conjoint and open 4) Radial vascular bundles
4)radial and open 17) In which of the following plant parts, ground
8) The ground tissue system in angiosperms does not tissue is not well differentiated Into layers?
include 1) Dicot stem
1) cortex 2) pericycle 2) Monocot stem
3) pith 4) vascular bundle 3) Dicot root
9) Vascular bundle is conjoint and open in 4) Monocot root
1) dicot root 2) monocot root 18) Vascular bundles are closed, conjoint and
3) dicot stem 4) monocot stem scattered in
10) Root hairs arise from 1)roots of monocots
1) epiblema 2) pericycle 2) Roots of dicots
3) endodermis 4) cambium ring 3) Stem of monocots
4) Stem of dicots
19) Parenchymatous cells lie between xylem and 1) guard cells
phloem patches in dicot roots are called 2) subsidiary cells
1) Pericycle 3) bulliform cells
2) conjuctive tissue 4) mesophyll cells
3) endodermis 27) Epiblema is
4) pith 1) innermost layer of the cortex
20) As compared to monocot root, the dicot root has/ 2) outermost layer of stele in monocot
shows 3) outermost epidermal layer in roots
1) Sclerenchymatous pericycle 4) storage tissue in cortex
2) Fewer xylem bundles 28) Which of the following is also referred to as
3) Large and well developed pith the starch sheath?
4) Primary growth only 1) pericycle of dicot stem
21) Companion cells 2) pericycle of monocot stem
1) Are specialised sclerenchymatous cells 3) endodermis of dicot stem
2) Are specialised parenchymatous cells 4) endodermis of monocot stem
3) Are associated with phloem fibres 29) The ground tissue in dorsiventral leaves
4) Are without cell wall consists of
22) All tissues on the inner side of the endodermis 1) cortex
such as pericycle, vascular bundles and pith 2) pericycle
constitute the 3) hypodermis
1) Epiblema 4) mesophyll
2) Cortex 30) Trlchomos cannot serve as an organ of
3) Stele 1) recredon
4) Conjunctive tissue (2) projection
23) Stomatal apparatus does not include (3) Reproducdon
1) Guard cells (4) Provention against water loss
2) subsidiary cells 31) Assertion (A): The ground tissue system
3) Mesophyll cells forms the main bulk of the plant
4) Stomatal aperture Reason (R): The vascular tissue system is
24) The vascular bundle shown in the diagram is formed by the xylem and phloem
present in 1) both assertion & reason are true and the
reason is the correct explanation of the
assertion
2) ) both assertion & reason are true and the
reason is not the correct explanation of the
assertion
3)assertion is true statement but reason is
false
4) both assertion and reason are false
statements
32) A Waxy thick layer generally covers the
1) dicot leaf epidermis which prevent water loss it is
2) monocot stem absent in
3) dicot root 1) stem 2) root
4) dicot stem 3)leaves 4) flower
25) The ring arrangement of vascular bundles is a 33) Palaside parenchyma is present
characteristic of 1) below the abaxial epidermis in monocot
1) monocot stem leaves
2) dicot stem 2) below the adaxial epidermis in monocot
3) monocot root leaves
4) dicot root 3) a round the vascular bundles in dicot
26) Opening and closing of stomata is controlled by leaves and monocot leaves
 4) below the adaxial epidermis in dicot leaves 1)rectangular 2) barrel shaped
34) Cells of which of the following structures in 3) kidney shaped
monocot roots give rise to lateral roots? 4) dumb-bell shaped
1)cortex 2) pith 46) the stomata are equally distributed on the
3)endodermis 4)pericycle both the surfaces of the epidermis in
35) More than six patches of xylem and phloem are 1)dorsiventral leaf
seen in the roots of 2)dicot stem
1) maize 2) bean 3) isobilateral leaf
3) pea 4) gram 4) dicot root
36) Few layers of––––––––cells are present next to 47) Following zonation is usually seen in ground
endodermis in dicot root tissue system
1)collenchymatous Epidermis(A), hypodermis(B),
2)thick walled parenchyma endodermis(C),Pericycle(D),pith(E)
3) sclerenchyma Out of A-E,which zone(s)is/are not seen in
4) thin walled parenchyma monocot stem but present in monocot root.
37) All of the following are the functions of epidermal 1) A and E 2) C,D and E
tissue system, except 3) A only 4) E only
1) protection 48) Arrange the following components in an
2) translocation of food order from inside to outside , in a dicot stem,
3)secretion then choose correct option
4) gaseous exchange A. Vascular bundles
38) Radial conduction of water in flowering plants B. Pith
takes place by C, Pericycle
1) tracheids 2)vessels D.Cortex
3) pay parenchyma 4) xylem fibres 1)A-B-C-D 2)D-C-A-B
39) In roots which of the following is impervious to 3)B-A-C-D 4)B-D-C-A
water? 49) In monocot leaf vascular bundles are nearly
1) pith 2) endodermis similar in size, because
3)cortex 4)pericycle 1) mesophyll cells are not differentiated
40) Bundle sheath is found in all, except 2) absence of bullifoem cells
1) monocot leaf 2) monocot stem 3) equal distribution of stomata on lower
3)dicot leaf 4)dicot root and upper epidermis
41) Subsidiary cells differ from guard cells in 4) presence of parallel venation
1) being parenchymatous 50) Pholem in gymnosperms lacks
2)lacking mitochondria 1) albuminous cells and sieve cells
3)lacking of chloroplast 2) sieve tubes only
4) lacking vacuole 3) companion cells only
42) Which of the following components of phloem is 4) both sieve tubes and companions cells
mostly absent in primary phloem?
1) companion cells 2) phloem fibres
3) sieve tube elements 4) phloem parenchyma
43) All of the following are lateral meristems,except
1)fascicular vascular ccambium
2) cork cambium
3) intercalary meristem
4) inter fasciculal meristem
44) Cortex is the region found between
1) epiblema and stele
2) pericycle and endodermis
3)endodermis and pith
4) endodermis and vascular bundle
45) Guard cells in grass leaf are
 BIOLOGY TEST
Excretory products and their Elimination

1. Consumption of excessive amounts of coffee and beer

can result in 9. Formation of urea in liver helps in the removal of
(1) On impact on renal system which metabolic wastes?
(2) Increased urinary output than normal (1) CO 2 and NH 3 (2) Ornithine and urea
(3) Decreased production of nephric filtrate (3) Urea and uric acid (4) CO 2 and H 2 O
(4) Failure of micturition reflex
10. Ureotelic organisms include all except
2. Filtrate obtained in Proximal convoluted tubule is
(1) Ostrich (2) Rana
(1) Hypertonic to blood plasma
(3) Homo sapiens (4) Sharks
(2) Isotonic to urine
(3) Hypotonic to blood plasma
11. Select the mismatch of the organism and its excretory
(4) Isotonic to blood plasma
structure.
(1) Planaria – Flame cells
3. Which of the following is not a part of renal tubule?
(2) Prawn – green glands
(1) Loop of Henle (2) Glomerulus
(3) Amphioxus – Protonephridia
(3) PCT (4) DCT
(4) Homo sapiens – Metanephridia
4. Select the event responsible for micturition in man.
12. Choose the correct match w.r.t. hormone, its source
(1) Contraction of external urethral sphincter
and function.
(2) Relaxation of involuntary sphincter
Hormone Source Functions
(3) Contraction of internal urethral sphincter
(1) ADH Adenohy- Increases loss of water
(4) Contraction of penile sphincters
pophysis water through urine
(2) Aldosterone Adrenal Stimulates the reabso-
5. In which of the following organisms are/is its
excretory structure(s) are not correctly matched? cortex rption of Na  and
Organisms Excretory structure water from DCT
(1) Amphioxus - Protonephridia with (3) ANF SA node of Causes vasodilation
solenocyte of heart and increase in blood
(2) Human - Kidney, liver volume, blood pressure
(3) Earthworm - Malpighian tubules (4) Renin Kidney Converts
(4) Prawn - Antennary gland or green angiotensinogen into
gland angiotensin II

6. If a person passes very dilute urine but his blood 13. The osmotic concentration of the glomerular filtrate is
glucose level is normal and he also drinks more water greatest at the U-shaped turn of the loop of Henle.
then this condition may be due to Here the filtrate concentration is about _______
(1) Decrease in insulin secretion from pancreas mOsmL1.
(2) More secretion of glucagon Choose the option which fills the blanks correctly
(3) Reduced formation of vasopressin by posterior (1) 200 (2) 600
pituitary (3) 800 (4) 1200
(4) Decreased vasopressin production from
hypothalamus 14. Excretory product of the largest digestive gland of the
human body are
7. Tubular reabsorption of water is minimum in (1) CO 2 and H 2 O vapours
(1) Descending segment of Henle’s loop
(2) NaCl and lactic acid
(2) Distal convoluted tubule
(3) Lysozyme and ammonia
(3) Collecting duct
(4) Bilirubin and Biliverdin
(4) Ascending segment of Henle’s loop
15. A disorder of the excretory system is
8. Part of urinary system where the term ‘urine’ is not
(1) Thrombocytopenia (2) Hematuria
applicable to the fluid flowing through it is
(3) Hemoglobinemia (4) Polycythemia
(1) Collecting duct (2) Ureters
(3) Loops of Henle (4) Minor calyx
16. Net filtration pressure leading to the formation of
urine in man is
(1) 40 mm Hg (2) 30 mm Hg
(3) 20 mm Hg (4) 10 mm Hg

ANSWER KEY
1 2 3 4 5 6 7 8 9 10
2 4 2 2 3 4 4 3 1 1
11 12 13 14 15 16
4 2 4 4 2 4
 BIOLOGY TEST
Excretory products and their Elimination

1. Read the following statements (4) Weight = 40–50 gm

(a) GFR in a healthy individual is about 180 litre/min Width = 2–3 cm
(b) The normal level of urea in the blood ranges from Length = 10–12 cm
25–40 gm per 100 ml of blood
(c) Human kidneys can produce urine nearly four 6. In Descending limb of loop of Henle urine becomes
times concentrated than the initial filtrate formed _______. Choose the option which correctly fills up
(d) A comparison of the volume of filtrate formed per the given blanks.
day with that of urine released, suggest that 85– (1) Hypotonic (2) Hypertonic
90% of the filtrate is reabsorbed by the renal (3) Isotonic (4) All of these
tubules
How many statement/s is/are correct? 7. Sudorific glands produce sweat, its principal function
(1) One (2) Two is thermoregulation. It also releases many contents
(3) Three (4) Four apart from water, except
(1) NaCl (2) Lactic acid
2. Krebs Hanseleit cycle takes place in (3) Urea (4) Uric acid
(1) Liver (2) Muscles
(3) Kidney (4) Both (1) & (2) 8. Increase in blood volume and blood pressure
stimulates certain specific cells of cardiac atria to
3. Symptoms of a disease include secrete a peptide hormone called
(a) Dehydration (1) Renin (2) Atrial natriuretic factor
(b) Thirst (3) Angiotensin (4) Aldosterone
(c) Diuresis
This disease results due to 9. In a normal kidney, a substance A is completely
(1) Hyposecretion of aldosterone filtered, neither reabsorbed nor secreted and passes
(2) Hypersecretion of aldosterone completely in urine. The substance A is
(3) Hypersecretion of ADH (1) Insulin (2) Glucose
(4) Hyposecretion of ADH (3) Uric acid (4) Inulin

4. Malfunctioning of kidney can lead to uremia. All of 10. Which of the following correctly explains the
the following statements are correct about the function of a specific part of human kidney?
treatment of uremia by dialysis, except (1) Distal convoluted – Obligatory reabsorption
(1) Cleared blood is pumped back the body through a tubule of water
vein after adding antiheparin (2) Henle’s loop – Reabsorption in this
(2) The porous cellophane membrane of the tube segment is maximum
allows the passage molecules against the (3) Afferent arteriole – Carries blood away
concentration gradient from the glomerulus
(3) Blood drained from radial artery is pumped into a (4) Collecting duct – It plays a role in the
dialysis unit after adding heparin maintenance of pH blood
(4) Dialysis unit contains a coiled cellophane tube, by selective secretion
surrounded by a dialysis fluid having the same of H and K  ions
composition as that of plasma except nitrogenous 11. Generally aquatic animals excrete ammonia, except
waste (1) Salamander and axolotl larva
(2) Whale and shark
5. Each kidney of an adult human measures (3) Catla and Rohu
(1) Length = 10–12 cm (4) Flying fish and Hydra
Width = 5–7 cm
Weight = 40–50 gm 12. The most common kidney stones are
(2) Width = 5–7 cm (1) Uric acid (2) Calcium oxalate
Thickness = 2–3 cm (3) Magnesium stones (4) Calcium carbonate
Weight = 120–170 gm
(3) Length = 10–12 cm 13. In the following ducts, the moving fluid is urine,
Width = 2–3 cm however one of them is an exception. Choose the
Thickness = 5–7 cm exception.
 (1) Major calyx (2) Renal pelvis
(3) Collecting duct (4) Loop of Henle

14. Conditional reabsorption of Na  and water takes

place in A in the presence of B .
(1) A – PCT B – Aldosterone
(2) A – DCT B – Aldosterone
(3) A – Collecting duct B – ADH
(4) A – Loop of Henle B – Vasopressin

15. Which of the following is the excretory product of

largest gland digestive gland of human body?
(1) CO 2 and H 2 O vapours
(2) NaCl and lactic acid
(3) Urea and uric acid
(4) Bilirubin and Biliverdin

ANSWER KEY
1 2 3 4 5 6 7 8 9 10
1 1 4 2 2 2 4 2 4 4
11 12 13 14 15
2 2 4 2 4
 BIOLOGY TEST
Excretory products and their elimination

1. In our kidneys the cortex extends in between the 9. Which of the following statement is incorrect w.r.t.
medullary pyramids and is called counter current mechanism?
(1) Calyx (2) Columns of Bertini (1) NaCl is transported by ascending limb of Henle’s
(3) Renal pelvis (4) Bowman’s capsule loop which is exchanged with the descending
limb of vasa recta
2. Select the odd one w.r.t. ureotelic animals (2) NaCl is returned to the medullary interstitium by
(1) Mammals (2) Terrestial amphibians the ascending portion of vasa recta
(3) Marine fishes (4) Bony fishes (3) Small amounts of urea enter thin segment of the
ascending limb of Henle’s loop which is
3. Read the following statements and choose the option transported back to the interstitum by the
with only correct statements collecting tubule
(a) Some amount of urea may be retained in the (4) Ascending limb of vasa recta is found in close
kidney matrix of some of ureotelic animals to proximity to ascending limb of loop of Henle
maintain a desired osmolarity and have country flow also with it
(b) Ammonia is the most toxic nitrogenous waste
which require large amount of water for its 10. Choose the mismatch
removal (1) Glycosuria Presnece of glucose in
(c) In ammonotelic animals, the main function of urine
kidney is osmoregulation (2) Ketonuria Presece of ketone bodies
(1) Only a and b (2) Only a and c in urine
(3) Only b and c (4) a, b and c (3) Uremia Presence of urea in
urine
4. Green glands perform the excretory function in (4) Glomerulonephritis Inflammation of
(1) Platyhelminthes (2) Cephalochordates glomeruli of kidney
(3) Prawns (4) Earthworms
11. The part of nephron involved in maximum
5. Human kidneys are situated between the reabsorption of filtrate in the presence of ADH is
(1) Last thoracic vertebra to last lumbar vertebra (1) Distal convoluted tubule
(2) Last cervical vertabra to third thoracic vertebra (2) Proximal convoluted tubule
(3) Twelfth thoracic vertebra to third lumber (3) Collecting duct
vertb (4) (4) Loop of Henle

6. Cortical nephrons differ from juxta-medullary 12. Which of the following is not true?
nephrons in (1) Bowman’s capsule and glumerulus are structural
(1) Presence of peritubular capillary network constitutents of renal corpuscles
(2) Presence of highly convoluted tubules (2) Ultrafiltration is first step in urin formation
(3) Presence of long loop of Henle (3) On an average 20-30 mg of urea is excreted out
(4) Vasa recta, which is absent or highly reduced per day in healthy individual
(4) Small amounts of nitrogenous waste could be
7. A fall in glomerular blood flow can activates eliminated through saliva too
(1) The neurohypophysis to synthesize ADH
(2) JG cells to release rennin 13. Select the odd one w.r.t. constituents of sweat
(3) Rennin-angiotensin mechanism (1) NaCl (2) Urea
(4) Atria of the heart to release atrial natriuretic factor (3) Lactic acid (4) Sterols

8. Select the structure which can’t be present in renal 14. The podocyte cells are structural constituents of
cortex (1) Pancreas (2) Heart
(1) DCT (3) Kidney (4) Liver
(2) PCT
(3) Peritubular capillaries 15. Which of the following part of uriniferous tubule is
(4) Vasa recta only impermeable to water?
(1) DCT
(2) Ascending limb of loop of Henle
 (3) PCT
(4) Descending limb of loop of Henle

16. Read the following statements and choose the correct

answer.
A : Lungs help in excretion as they remove CO 2 and
water
B : Sweat also help in the elimation of wastes but it’s
primary function is to facilitate a cooling effect on
the body surface
(1) Both statements are correct
(2) Both statements are incorrect
(3) Only statement A is correct
(4) Only statement B is correct

17. Human excretory system contains all except

(1) A pair of kidney
(2) A ureter
(3) A urinary bladder
(4) A urethra

18. Cardiac hormone ANF

(1) Acts as check on rennin angiotensin
aldosterone mechanism
(2) Is secreted from ventricles of heart
(3) Increases the blood pressure
(4) Increases absorption of water from later part of
renal tubules

19. Incorrect for function of DCT is

(1) Reabsorption of Na 
(2) Reabsorption of water
(3) Reabsorption of HCO 3
(4) Reabsorption of K 

20. Glomerular filtration occurs through filtration

membrane which contains all except
(1) Epithelial cells of Bowman’s capsule
(2) Epithelial cells of glomerular blood capillaries
(3) Epithelial cells of efferent arteriole
(4) Basement membrane
PHYSICS DAY-4
CTC 2024 CHEMISTRY DAY-4
Test – 20
CHEMISTRY
Equilibrium
Q.1 KMnO4 can be prepared from K2MnO4 as Q.6 In the following reaction
per the reaction,
 HPO42– + C2O42–
HC2O4– + PO43– 
2–
 2MNO + MnO2 + 4OH
3MnO + 2H2O
4
-
4
-

which pair can act as Bronsted bases only?

The reaction can go to completion by
removing OH– ions by adding (a) HC2O4– and PO43–
(a) KOH (b) CO2 (b) HPO42– and C2O42–
(c) SO2 (d) HCl (c) HC2O4– and HPO42–
Q.2  2NH3 ; K c = 1.2
N2 + 3H2  (d) PO43– and C2O42–
Q.7 The pH of 10–11 M HCl at 25°C is
At the start of a reaction, there are 0.249 mol
N2, 3.21 × 10–2 mol H2 and 6.42 × 10–4 mol (a) 11
NH3 in a 3.50 L reaction vessel at 375°C. (b) 3
Hence reaction will proceed in
(c) Slightly greater than 7
(a) Forward direction
(d) Slightly less than 7
(b) Backward direction
Q.8 The pH of a mixture of 100 ml 1M H2SO4
(c) At equilibrium and 200 ml 1N NaOH at 25°C is
(d) Stops (a) More than 7 (b) Less than 7
Q.3  2A
The equilibrium constants for A2 (g)  (c) Equal to 7 (d) Can’t predict
–8
(g) at 400 K and 600 K are 1 × 10 and 1 × Q.9 Which is incorrect?
10–2 respectively. The reaction is
(a) Conjugate acid of H2O is H3O+
(a) Exothermic
(b) Conjugate base of HCO3– is CO32–
(b) Endothermic
(c) May be exothermic or endothermic (c) Conjugate base of NH3 is NH 2,
(d) No heat is evolved or absorbed (d) Conjugate base of HOCl is Cl–
Q.4 Following three gaseous equilibrium Q.10 At 30°C, the solubility of Ag2CO3 (Ksp = 8 ×
reactions are occurring at 27°C 10–12) would be maximum in 1 litre of
 2CO2
A; 2CO + O2  (a) 0.05 M Na2CO3 (b) 0.05 M AgNO3

 PCl 3 + Cl 2
B; PCl 5  (c) Pure water (d) 0.05 M NH3
Q.11 The Kc for given reaction will be
 H2 + I 2
C; 2HI 
 C(g) + 2D(s)
A2 (g) + 2B(g) 
KP
The correct order of K for the following
C [C][D]2 [C]
reactions is (a) K  (b) K 
[A 2 ][B]2 [A 2 ][B]2
(a) A < C < B (b) A < B < C
2 [A 2 ][B]2
(c) C < B < A (d) B < C < A (c) K  [A 2 ][B]2 (d) K 
[C][D] [C]
Q.5 Which causes the change in the value of
equilibrium constant of any equilibria? Q.12 In a chemical equilibrium the rate constant
(a) Adding of inert gas at constant pressure of the backward reaction is 7.5 × 10–4 and
the equilibrium constant is 1.5. So the rate
(b) Increasing the pressure constant of the forward reaction is
(c) Adding of inert gas at constant volume (a) 2 × 10–3 (b) 15 × 10–4
(d) Decreasing the temperature (c) 1.125 × 10–3 (d) 9.0 × 10–4

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CTC 2024
Q.13 1.1 mole of A is mixed with 1.2 mol of B and the Q.20 Given the reaction,
mixture is kept in a 1 L flask till the equilibrium 
2X(g) + Y(g)   Z(g) + 80 kcal
Which combination of pressure and
 2C + D is reached. At equilibrium
A + 2B 
temperature gives the highest yield of Z at
0.1 mol of D is formed. The Kc of the reaction equilibrium?
(a) 0.002 (b) 0.004
(a) 1000 atm and 500°C (b) 500 atm and 500°C
(c) 0.001 (d) 0.003
(c) 1000 atm and 100°C (d) 500 atm and 100°C
Q.14  XY(g) + Y(g)
XY2 dissociates as, XY2 (g) Q.21 Boric acid is an acid because its molecule
Initial pressure of XY2 is 600 mm Hg. The (a) Contains replaceable H+ ion
total pressure at equilibrium is 800 mm Hg. (b) Gives up a proton
Assuming volume of system to remain
constant, the value of Kp is (c) Accepts OH– from water releasing proton
(a) 50 (b) 100 (d) Combines with proton from water molecule
(c) 20 (d) 400 Q.22 Which of the following fluoro-compounds is
most likely to behave as a Lewis base?
Q.15 In which of the following does the reaction
(a) BF3 (b) PF3
go almost to completion?
(c) CF4 (d) SiF4
(a) Kc = 103 (b) Kc = 102
Q.23 MY and NY3, two nearly insoluble salts, have
(c) Kc = 10–2 (d) Kc = 10–3 the same KSP values of 6.2 × 10–13 at room
Q.16 Two moles of N2 and two moles of H2 are temperature. Which statement would be true
taken in a closed vessel of 5 litres capacity in regard to MY and NY3?
and suitable conditions are provided for the
(a) The addition of the salt of KY to solution of
reaction. When the equilibrium is reached,
MY and NY3 will have no effect on their
it is found that a half mole of N2 is used up.
solubilities
The equilibrium concentration of NH3 is
(a) 0.3 (b) 0.4 (b) The molar solubilities of MY and NY3 in
water are identical
(c) 0.2 (d) 0.1
Q.17 4.0 moles of PCl5 dissociate at 760 K in a 2 (c) The molar solubility of MY in water is less
than that of NY3

litre flask, PCl5(g)   PCl3(g) + Cl2(g) at
equilibrium. 0.8 mole of Cl2 was present in (d) The salts MY and NY3 are more soluble in
the flask. The equilibrium constant would be 0.5 M KY than in pure water
(a) 1.0 × 10–1 (b) 1.0 × 10–4 Q.24 What is the correct relationship between the
(c) 1.0 × 10–2 (d) 1.0 × 10–3 pHs of isomolar solutions of sodium oxide
Q.18 Which one of the following equilibrium (pH 1 ), sodium sulphide (pH 2 ), sodium
moves backward when pressure is applied?
selenide (pH3) and sodium telluride (pH4)?
 2NH3 (g)
(a) N2 (g)  3H2 (g)  (a) pH1> pH2> pH3 > pH4
 2NO(g)
(b) N2 (g)  O2 (g) 
(b) pH1 > pH2 > pH3> pH4
(c) Water 
 Ice (c) pH1< pH2< pH3< pH4
 I2 (s)
(d) I2 (g) 
(d) pH1< pH2< pH3 < pH4
Q.19 Kp is how many times equal to Kc for the
Q.25 If the equilibrium constant for
given reaction?

N2 (g) +O2 (g)  2NO(g) is K, the equilibrium
 2NH 3 (g)
N 2 (g)  3H 2 (g)  1 1
NO(g) will be
constant for N2 (g) + O2 (g) 
2 2
1
(a) (b) R 2 T 2 (a) K (b) K2
R T2
2

(c) R/T (d) RT 1

(c) K1/2 (d) K
2
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Q.26 Which one of the following pairs of solution Q.32 100 ml of 0.1 N NaOH is mixed with 100 ml
is not an acidic buffer? of 0.1 N H 2SO 4. The pH of the resultant
(a) H2CO3 and Na2CO3 solution is
(b) H3PO4 and Na3PO4 (a) < 7
(c) HClO4 and NaClO4 (b) > 7
(d) CH3COOH and CH3COONa (c) = 7
Q.27 What is the pH of the resulting solution (d) Cannot be predicted
when equal volumes of 0.1 M NaOH and Q.33 The pH of 0.016 M NaOH solution is
0.01 M HCl are mixed? (a) 1.796 (b) 12.204
(a) 7.0 (b) 1.04 (c) 11 (d) None of these
(c) 12.65 (d) 2.0
Q.34 Which of the following statements is correct for
Q.28 Assertion : Catalyst affects the final state of
a reversible process in a state of equilibrium?
the equilibrium.
Reason : It enables the system to attain a new (a) G° = 2.30 RT log K
equilibrium state by complexing with the reagents.
(b) G = –2.30 RT log K
(a) If both assertion and reason are true and the
reason is the correct explanation of the assertion. (c) G = 2.30 RT log K
(b) If both assertion and reason are true but (d) G° = –2.30 RT log K
reason is not the correct explanation of the
Q.35 A salt of strong acid and weak base is dissolved
assertion.
in water. Its hydrolysis in solution is
(c) If assertion is true but reason is false.
(a) Unaffected on heating
(d) If the assertion and reason both are false.
(b) Increased by adding strong acid
Q.29 Statement I : At higher temperature, Kw of water
remains unaltered. (c) Suppressed by diluting
Statement II : Kw is a constant. (d) Suppressed by adding strong acid
(a) Both statements are correct Q.36 Which of the following salts undergoes
hydrolysis?
(b) Statement I is correct & II is incorrect
(a) CH3COONa (b) KNO3
(c) Statement I is incorrect & II is correct
(d) Both statements are incorrect (c) NaCl (d) K2SO4
Q.30 Statement I : HCl, HNO3 and H2SO4 are equally Q.37 If the value of an equilibrium constant for a
strong acids in water. particular reaction is 1.6 × 10 12, then at
Statement II : Water is a stronger acid than alcohols. equilibrium the system will contain
(a) Both statements are correct
(a) Similar amounts of reactants and products
(b) Statement I is correct & II is incorrect
(b) All reactants
(c) Statement I is incorrect & II is correct
(d) Both statements are incorrect (c) Mostly reactants

Q.31  2C , K = x.
For reaction, 2A  B  (d) Mostly products

 A  1/ 2B will
Equilibrium constant for C  Q.38 Degree of hydrolysis (h) of a salt of weak
be acid and a strong base is given by
(a) x (b) x/2 Kh
(a) h  (b) h  K h
1 c
(c) (d) x c Kw
x (c) h  (d) h 
Kh Kb

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Q.39 pH of a salt of a strong base with weak acid Q.46 Correct relation between dissociation
1 1 1 constants of a di-basic acid
(a) pH  pK w  pK a  log C
2 2 2 (a) K a1  K a 2 (b) K a1  K a 2
1 1 1
(b) pH  pK w  pK a  log C 1
2 2 2
(c) K a1  K a 2 (d) K a1  K
1 1 1 a2
(c) pH  pK w  pK a  log C
2 2 2 Q.47 Assertion : Equilibrium constant for the reverse
(d) None of these reaction is the inverse of the equilibrium constant
Q.40 Which relation is correct for NH4Cl? for the reaction in the forward direction.

(a) Kh = Kw/Ka (b) Kh = Kw/Kb Reason : Equilibrium constant depends upon the
way in which the reaction is written.
(c) Kh = Kw/Ka.Kb (d) Kh = Kw.Ka
(a) If both assertion and reason are true and the
reason is the correct explanation of the
Q.41 1 c.c of 0.1 N HCl is added to 1 litre solution assertion.
of sodium chloride. The pH of the resulting (b) If both assertion and reason are true but
solution will be reason is not the correct explanation of the
assertion.
(a) 7 (b) 0
(c) If assertion is true but reason is false.
(c) 10 (d) 4
(d) If the assertion and reason both are false.
Q.42 The solubility product of AgBr is 4.9 × 10–9.
The solubility of AgBr will be Q.48 Concentr ation of the Ag+ ions in a saturated
solution of Ag 2C2O 4 is 2.2 × 10 –4 mol L–1.
(a) 7 × 10–4 mole/litre (b) 7 × 10–5 g/litre
Solubility product of Ag2C2O4 is
(c) 1.316 × 10–2 g/litre (d) 1 × 10–3 mole/litre
(a) 2.42 × 10–8 (b) 2.66 × 10–12
Q.43 100 ml of 0.1 N NaOH is mixed with 100 ml (c) 4.5 × 10–11 (d) 5.3 × 10–12
of 0.2 N H 2SO 4. The pH of the resultant
Q.49 Which one of the following compounds is not
solution is
a protonic acid?
(a) < 7 (b) >7
(c) = 7 (d) Cannot be predicted (a) B(OH)3 (b) PO(OH)3
Q.44 The solubility product of BaSO4 is 4 × 10–10. (c) SO(OH)2 (d) SO2(OH)2
The solubility of BaSO4 in presence of 0.02
Q.50 The solubility of AgCl(s) with solubility
N H2SO4 will be
product 1.6 × 10–10 in 0.1 M NaCl solution
(a) 4 × 10–8 M (b) 2 × 10–8 M would be
(c) 2 × 10–5 M (d) 2 × 10–4 M (a) 1.26 × 10–5 M (b) 1.6 × 10–9 M
Q.45 Solubility product of the salt, AxBy will be (c) 1.6 × 10–11 M (d) Zero
represented most suitably, if the solubility
is represented by S
(a) Ksp = xyyx(S)x×y (b) Ksp = xy + yx + Sx+y
(c) Ksp = xxyy(S)x+y (d) Ksp = x·Sx+y·y

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