1.
Which one of the following elements forms highest number of
compounds?
A. Oxygen
B. Hydrogen
C. Chlorine
D. Carbon
Answer ||| D
2.The valency of an element depends upon the
A. total number of Protons in an atom
B. Mass Number of an atom
C. total number of Neutrons in an atom
D. total number of Electrons in the outermost shell of an atom
Answer ||| D
3.Match List I with List II and select the correct answer using the code
given below the Lists:
List I (Noble gas)
A. Argon
B. Neon
C. Krypton
D. Xenon
List II (Use)
1) In lights for advertising display
2) Airport landing lights and in light houses
3) Light in photographer’s flash gun
4) In tungsten filament to last longer
A. A-3 B-1 C-2 D-4
B. A-3 B-2 C-1 D-4
C. A-4 B-2 C-1 D-3
D. A-4 B-1 C-2 D-3
Answer ||| D
4.Temporary hardness in water is due to which one of the following of
Calcium and Magnesium?
A. Hydrogencarbonates
B. Carbonates
C. Chlorides
D. Sulphates
Answer ||| A
5.Stung by hairs of nettle leaves causes burning pain. This is due to the
injection of
A. Acetic acid
B. Methanoic acid
C. Sulphuric acid
D. Hydroloric acid
Answer ||| B
6.Rutherford’s alpha-particle scattering experiment was responsible for
the discovery of
A. Electron
B. Proton
C. Nucleus
D. Helium
Answer ||| C
7.Carbon-14, Cobalt-60, Arsenic-74, Iodine-131 and Uranium-235 are:
A. Isotopes
B. Radioactive Isotopes
C. Isobars
D. Radioactive Isobars
Answer ||| B
8.Identify the type of reaction in the following reaction-
BaCl 2(aq)+Na2SO4(s)àBaSO4(s)+2NaCl(aq)
A. Combination Reaction
B. Decomposition Reaction
C. Displacement Reaction
D. Double Displacement Reaction
Answer ||| D
9.Consider the following statements.
1) Rancid food materials are very healthy for adults.
2) Oily Food materials kept for long undergo oxidation reaction.
Choose the right code-
A. Only 1
B. Only 2
C. Both
D. None
Answer ||| B
10.Which of the following pairs are reducing agents?
A. HCOOH, HCl
B. MgO, Flourine
C. Halogens
D. HNO3, KClo3
E. O2, O3
Answer ||| A
11.Which of the following statements is not true about Oxygen?
A. It is the most abundant element in Earth’s atmosphere.
B. Oxygen does not form oxides with helium.
C. Trioxygen is a most reactive allotrope of oxygen.
D. Oxygen is characterized by a paramagnetic property.
Answer ||| A
12.Which one of the following statements is correct?
A. Covalent bonds are directional
B. lonic bonds are directional
C. Both covalent and ionic bonds are directional
D. Both covalent and ionic bonds are non-directional
Answer ||| A
13.If one mixes up ashes with animal fat, the substance received in the
crude form is called
A. Pheromone
B. Soap
C. Cement
D. Concrete
Answer ||| B
14.An element P on exposure to moist air turns reddish-brown and a new
compound Q is formed. The substance P and Q are:
A. P = Fe, Q = Fe2O3
B. P = Ag, Q = Ag2S
C. P = Cu, Q = CuO
D. P = Al, Q = Al 2O3
Answer ||| A
15.In a balanced equation-
H2SO4 + xHI → H2S + yI2 + zH2O
The values of x, y, z are
A. x = 3, y = 5, z = 2
B. x = 4, y = 8, z = 5
C. x = 8, y = 4, z = 4
D. x = 5, y = 3, z = 4
Answer ||| C
16.Which of the following separation methods depends on differences in
boiling points?
A. fractional distillation and simple distillation
B. fractional distillation and filtration
C. simple distillation and paper chromatography
D. filtration and paper chromatography
Answer ||| A
17.The proposition 'equal volumes of different gases contain equal
numbers of molecules at the same temperature and pressure' is known as
-
A. Avogadro's Hypothesis
B. Gay-Lussac's Hypothesis
C. Planck's Hypothesis
D. Kirchhoff's Theory
Answer ||| A
18.Molecules of which of the following has cage like structure?
1) Diamond
2) Graphite
3) Fullerenes
Select the correct answer using the code given below:
A. 1, 2 and 3
B. 2 and 3 only
C. 2 only
D. 3 only
Answer ||| D
19.Match list (i) with list (ii) and select the correct answer using the code
given below the lists:
List i. (compounds/molecules)
I. XeF4
II. ClF3
III. IF7
IV. BrF5
List ii. (Shape of molecules)
1) Square pyramidal
2) Pentagonal bi-pyramidal
3) Square planar
4) T-shaped
A. I-1 II-2 III-3 IV-4
B. I-2 II-1 III-3 IV-4
C. I-3 II-4 III-2 IV-1
D. I-1 II-2 III-4 IV-3
Answer ||| C
20.The raw materials used for the manufacture of Portland cement are
A. Lime, silica and sulphur dioxide
B. Lime, silica and carbon dioxide
C. Lime, silica and alumina
D. Lime, silica and boric acid
Answer ||| C
21.Arrange the following in decreasing order of their basic strength :
ammonia, triethylamine, aniline, ethylamine and diethylamine.
A. Diethylamine > Triethylamine > Ethylamine > Ammonia > Aniline
B. Ethylamine > Diethylamine > Triethylamine > Ammonia > Aniline
C. Diethylamine > Ethylamine > Ammonia> Triethylamine > Aniline
D. Diethylamine > Ammonia > Triethylamine > Ethylamine > Aniline
Answer ||| A
22.Which of the following complex is most stable?
A. [M(NH3)6]2+
B. [M(NH3)6]3+
C. [M(en)2(NH3)2]3+
D. [M(en)3]3+
Answer ||| D
23.The bond order of Cl-O bond in ClO4-
A. 2
B. 1.5
C. 1.33
D. 1.75
Answer ||| D
24.Which of the following is the molecular formula of cyclobutane?
A. C4H10
B. C4H6
C. C4H8
D. C4H4
Answer ||| C
25.The I.U.P.A.C name of CH3CH2CH=CH2 is?
A. 3-Butene
B. Prop-1-ene
C. But-1-ene
D. Butyne
Answer ||| C
26.The nitrogenous fertilizer manufactured in India which occupies the
first place in production is:
A. Urea
B. Ammonium phosphate
C. Ammonium sulphate
D. Calcium ammonium nitrate
Answer ||| A
27.Determine the oxidation number of the elements in H 2CO3.
A. H: +1, O: -2, C: +4
B. H: +2, O: -1, C: +3
C. H: +1, O: -2, C: +3
D. H: -1, O: +2, C: +4
Answer ||| A
28.To weld metals together, high temperature is required. Such a high
temperature is obtained by burning:
A. Acetylene in oxygen
B. LPG in oxygen
C. Methane in oxygen
D. Acetylene in nitrogen
Answer ||| A
29.White Phosphorus glows in the dark due to:
A. amorphous character
B. slow oxidation
C. high ignition temperature
D. good conducting property of electricity
Answer ||| B
30.Dihydrogen can be prepared on a commercial scale by the action of
steam on hydrocarbons when a mixture of CO and H 2 gas is formed. It is
known as
A. water gas
B. producer gas
C. industrial gas
D. fuel gas
Answer ||| A
