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Chemistry MCQs for NEET — Practice Questions with Answers

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Iâ€“|3| is used for treatment of

A. Thyroid disorders B. Skin disorders C. Brain tumours D. Kidney stones

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Explanation

I - 131 is used for treatment of thyroid disorders.

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Bleaching action of chlorine is due to

A. Oxidation B. Reduction C. Hydrolysis D. Its acidic nature

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Explanation

$ Cl_2 + H_2O \rightarrow 2HCl + [O] $

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Element that librates oxygen gas from water is

A. P B. Na C. F D. I

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Explanation

$ 2H_2O + 2F_2 \rightarrow 4HF + O_2 $

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Which of following sequence is correct with reference to oxidation number of iodine

A. $ I_2 \lt ICl \lt HI \lt HIO_4 $ B. $ HIO_4 \lt ICl \lt I_2 \lt HI $ C. $ I_2 \lt HI \lt ICl \lt HIO_4 $ . D. $ HI \lt I_2 \lt IC \lt HIO_4 $

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Explanation

$ HI \lt I_2 \lt ICl \lt HIO_4 $

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Chlorine is liberated when we heat

A. $ KMnO_4 + NaCl $ B. $ K_2 Cr_2O_7 + MnO_2 $ C. $ Pb_2 (NO_3)_4 + MnO_2 $ D. $ K_2 Cr_2O_7 + HCl $

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Explanation

$ K_2Cr_2O_7 + 14HCl \rightarrow 2KCl + 2 CrCl_3 + 7H_2O + 3Cl_2 $.

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Metal halide, insoluble in water is

A. AgI B. KBr C. $ Ca Cl_2 $ D. AgF

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Explanation

AgI is covalent compound.

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$ Cl_2 reacts with CS_2 in presence of I_2 $ to form

A. $ CHCl_3 $ B. $ CCl_4 $ C. $ C_3 H_5 Cl $ D. $ C_3 H_6 $

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Explanation

$ CS_2 + 3Cl_2 \rightarrow CCl_4 + S_2Cl_2 $

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Amongst $ LiCl , RbCl , BeCl_2 \& MgCl_2 $ , max. & min. ionic character will be shown by

A. $ LiCl , MgCl_2. $ B. $ RbCl , BeCl_2 $ C. $ RbCl , MgCl_2 $ D. $ MgCl_2, BeCl_2 $

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Explanation

Acc to Fajan's rule , largest cation & smallest an ion

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Which of following chloride is water insoluble

A. HCl B. AgCl C. Both 1 & 2 D. None

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Explanation

AgCl is water insoluble chloride.

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The alkali metal halide are soluble in water but LiF is insoluble because

A. It's Amphoteric B. Li -F is highly ionic C. It's Lattice energy is high D. $ Li^+ $ ion is least hydrated.

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Explanation

Small atomic size of Li & F , lattice energy highest

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