1.

When 2 mL of sodium hydroxide solution is added to few pieces of

granulated zinc in a test tube and then warmed, the reaction that occurs can
be written in the form of a balanced chemical equation as:
(a) NaOH+Zn → NaZnO2 + H₂O
(b) 2NaOH + Zn → Na₂ZnO2 + H₂
(c) 2NaOH+Zn → NaZnO2 + H₂
(d) 2NaOH+Zn → Na2ZnO2 + H2O
(b) 2NaOH + Zn → Na₂ZnO2 + H₂

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2. Select from the following a decomposition reaction in which source of
energy for decomposition is light
(a) 2FeSO4→ Fe2O3 + SO2 + SO
(b) 2H₂O → 2H2+O2
(c) 2AgBr → 2Ag + Br2
(d) CaCO3→ CaO + CO2
(c) 2AgBr → 2Ag + Br2

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3. A metal and a non-metal that exists in liquid state at the room
temperature are respectively:
(a) Bromine and Mercury
(b) Mercury and lodine
(c) Mercury and Bromine
(d) lodine and Mercury
(c) Mercury and Bromine

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4. Consider the following compounds: FeSO4; CuSO4; CaSO4, Na2CO3
The compound having maximum number of water of crystallisation in its
crystalline form in one molecule is:
(a) FeSO4
(b) CuSO4
(c) CaSO4
(d) Na₂CO3
(d) Na₂CO3

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5. Oxides of aluminium and zinc are:
(a) acidic
(b) Basic
(c) Amphoteric
(d) neutral
(c) Amphoteric

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6. MnO2+4HC1 → MnCl2 + 2H2O + Cl2
The reaction given above is a redox reaction because in this case:
(a) MnO2 is oxidised and HCl is reduced.
(b) HCI is oxidised.
(c) MnO2 is reduced.
(d) MnO2 is reduced and HCl is oxidised.
(d) MnO2 is reduced and HCl is oxidised.

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7. In a nerve cell, the site where the electrical impulse is converted into a
chemical signal is known as:
(a) Axon
(b) Dendrites
(c) Neuromuscular junction
(d) Cell body
(c) Neuromuscular junction

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8.A stomata closes when:
(i) it needs carbon dioxide for photosynthesis.
(ii) it does not need carbon dioxide for photosynthesis.
(iii) water flows out of the guard cells.
(iv) water flows into the guard cells.
The correct reason(s) in this process is/are:
(a) (i) only (b) (i) and (iii)
(c)(ii) and (iii) (d) (ii) and (iv)
(c)(ii) and (iii)

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9.At what distance from a convex lens should an object be placed to get an
image of the same size as that of the object on a screen?
(a) Beyond twice the focal length of the lens.
(b) At the principal focus of the lens.
(c) At twice the focal length of the lens.
(d) Between the optical centre of the lens and its principal focus.
(c) At twice the focal length of the lens.

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10. The lens system of human eye forms an image on a light sensitive screen,
which is called as:
(a) Cornea (b) Ciliary muscles
(c) Optic nerves (d) Retina
(d) Retina

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11. Identify the food chain in which the organisms of the second trophic
level are missing:
(a) Grass, goat, lion
(b) Zooplankton, Phytoplankton, small fish, large fish
(c) Tiger, grass, snake, frog
(d) Grasshopper, grass, snake, frog, eagle
(c) Tiger, grass, snake, frog

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 12.For two statements are given One labelled as Assertion (A) and the other
labelled as Reason (R). Select the correct answer to these questions from the
codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Hydrogen gas is not evolved when zinc reacts with nitric acid.
Reason (R): Nitric acid oxidises the hydrogen gas produced to water and itself
gets reduced.
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
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13.For two statements are given One labelled as Assertion (A) and the other
labelled as Reason (R). Select the correct answer to these questions from the
codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Accumulation of harmful chemicals is maximum in the organisms at
the highest trophic level of a food chain.
Reason (R): Harmful chemicals are sprayed on the crops to protect them from
diseases and pests.
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
14.For two statements are given One labelled as Assertion (A) and the other
labelled as Reason (R). Select the correct answer to these questions from the
codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): The rate of breathing in aquatic organisms is much faster than
in terrestrial organisms.
Reason (R): The amount of oxygen dissolved in water is very high as
compared to the amount of oxygen in air.
(c) Assertion (A) is true, but Reason (R) is false.
15.For two statements are given One labelled as Assertion (A) and the other
labelled as Reason (R). Select the correct answer to these questions from the
codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): The rainbow is a natural spectrum of sunlight in the sky.
Reason (R): Rainbow is formed in the sky when the sun is overhead and
water droplets are also present in air
(c) Assertion (A) is true, but Reason (R) is false.
16. In bifocal lenses used for the correction of presbyopia :
(a) the upper portion is of convex lens for the near vision and lower part is of
concave lens for the distant vision.
(b) the upper portion is of convex lens for the distant vision and lower part is of
concave lens for the near vision.
(c) the upper portion is of concave lens is for the near vision and lower part is of
convex lens for the distant vision.
(d) the upper portion is of concave lens for the distant vision and lower part is of
convex lens for the near vision.
(d) the upper portion is of concave lens for the distant vision and lower part is
of convex lens for the near vision.

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17. Solid calcium oxide reacts vigorously with water to form calcium
hydroxide accompanied by the liberation of beat. From the information
given above it may be concluded that this reaction
(A) is endothermic and pH of the solution formed is more than 7.
(B) is exothermic and pH of the solution formed is 7.
(C) is endothermic and pH of the solution formed is 7.
(D) is exothermic and pH of the solution formed is more than 7.
(D) is exothermic and pH of the solution formed is more than 7.

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18. Juice of tamarind turns blue litmus to red. It is because of the presence
of an acid called:
(A) methanoic acid (B) acetic acid
(C) tartaric acid (D) oxalic acid
(C) tartaric acid

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19. Select from the following a process in which a combination reaction is
involved:
(A) Black and White photography (B) Burning of coal
(C) Burning of methane (D) Digestion of food
(B) Burning of coal

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20. The oxide which can react with HCl as well as KOH to give
corresponding salt and water is

(A) CuO (B) A𝑙 2O3 (C) Na2O (D) K2O

(B) A𝑙 2O3

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21. Consider the following cases:

(A) CaSO4 + A𝑙 (B) CaSO4 + Na

(C) FeSO4 + Cu (D) ZnSO4 + Mg
The cases in which new products will form are-
(A) (a) and (b) (B) (b) and (c)
(C) (c) and (d) (D) (b) and (d)
(D) (b) and (d)

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22. Identify the correct statement about the following reaction

2H2S + SO2 2H2O+ 3S

(A) H2S is oxidising agent and SO2 reducing agent.
(B) H2S is reduced to sulphur.
(C) SO₂ is oxidising agent and H2 is reducing agent.
(D) SO2 is oxidised to sulphur.
(C) SO₂ is oxidising agent and H2 is reducing agent.

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23.Which of the following statement(s) is (are) true about human heart?
(a) Right atrium receives oxygenated blood from lungs through pulmonary
artery.
(b) Left atrium transfers oxygenated blood to left ventricle which sends it to
various parts of the body.
(c) Right atrium receives deoxygenated blood through vena cava from upper
and lower body.
(d) Left atrium transfers oxygenated blood to aorta which sends it to different
parts of the body.
(A) (a) (B) (a) and (d)
(C) (b) and (c) (D) (b) and (d)
(C) (b) and (c)
24.Select out of the following a gland which does NOT occur as a pair in the
human body:
(A) Pituitary (B) Ovary
(C) Testis (D) Adrenal
(A) Pituitary

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25. In human respiratory system, when a person breathes in, the position of
ribs and diaphragm will be
(A) lifted ribs and curve/dome shaped diaphragm.
(B) lifted ribs and flattened diaphragm.
(C) relaxed ribs and flattened diaphragm
(D) relaxed ribs and curve/dome shaped diaphragm.
(B) lifted ribs and flattened diaphragm.

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26. Consider the following statements in the context of human eye:
(a) The diameter of the eye ball is about 2.3 cm.
(b) Iris is a dark muscular diaphragm that controls the size of the pupil.
(c) Most of the refraction for the light rays entering the eye occurs at the
crystalline lens.
(d) While focusing on the objects at different distances the distance between
the crystalline lens and the retina is adjusted by ciliary muscles.
The correct statements are –
(A) (a) and (b) (B) (a), (b) and (c)
(C) (b), (c) and (d) (D) (a), (c) and (d)
(A) (a) and (b)

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27.For Qs, two statements are given One labelled as Assertion (A) and the
other labelled as Reason (R). Select the correct answer to these questions from
the codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Different metals have different reactivities with water and dilute acids.
Reason (R): Extraction of a metal from its ore depends on its position in the
reactivity series.

(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct
explanation of the Assertion (A).
28.For Qs two statements are given One labelled as Assertion (A) and the other
labelled as Reason (R). Select the correct answer to these questions from the
codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Myopic eye cannot see distant objects distinctly.
Reason (R): For the correction of myopia converging lenses of appropriate
power are prescribed by eye-surgeons.
(c) Assertion (A) is true, but Reason (R) is false.
29. The number of shells required to write the electronic configuration of
Potassium (At. No. 19)
(a) 1
(b) 2
(c) 3
(d) 4

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30. Which of the following is an alloy of copper and tin?
(a) Nichrome
(b) Brass
(c) Constantan
(d) Bronze

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6. Which of the following is an alloy of copper and tin?
(a) Nichrome
(b) Brass
(c) Constantan
(d) Bronze

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31.Tooth decay begins at the pH of:
(a) 8.1
(b) 5.8
(c) 6.5
(d) 8.0

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32.Two statements are given One labelled as Assertion (A) and the other
labelled as Reason (R). Select the correct answer to these questions from the
codes (a), (b), (c) and (d) as given below:
(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct
explanation of the Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the
correct explanation of the Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Assertion (A): Metals in the middle of activity series are found in nature as
sulphides or carbonates.
Reason (R): The sulphide ores are calcinated whereas carbonate ores are
roasted to extract metals from them.
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33.An iron nail is placed in a solution of copper sulphate. The nail is taken
out after 15 minutes. The nail will be found to be covered with:
(A) blue deposit (B) brown deposit
(C) grey deposit (D) green deposit

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