JEE Main, NEET MCQs Set 16

JEE MAIN, AIPMT, Chemistry Question Papers – MCQs Test 16

Sr. No.




Presence of halogen in organic compounds can be detected using

(A) Beilstien’s test

(B) kjeldahl test

(C) Duma’s test

(D) Leibig’s test

Answer: (A)


Rate of physical adsorption increases with

(A) decrease in pressure

(B) increase in temperature

(C) decrease in surface area

(D) decrease in temperature

Answer: (D)


Reaction of methyl bromide with aqueous sodium hydroxide involves ______.

(A) SN 1 mechanism

(B) racemisation

(C) SN2 mechanism

(D) inversion of configuration

Answer: (C)


Standard electrode potential for Sn4+ / Sn2+ couple is +0.15 V and that for the Cr3+ / Cr couple is –0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be

(A) +1.83 V

(B) +1.19 V

(C) +0.89 V

(D) +0.18 V

Answer: (C)


Standard electrode potential of three metals X, Y and Z are –1.2 V, +0.5 V and –3.0 V respectively. The reducing power of these metals will be

(A) X > Y > Z

(B) Y > Z > X

(C) Y > X > Z

(D) Z > X > Y

Answer: (D)


The activation energy for a reaction at the temperature TK was found to be 2.303 RT J mol1. The ratio of the rate constant to Arrhenius factor is ______.

(A) 102

(B) 101

(C) 2 ×102

(D) 2 ×103

Answer: (B)


The amino acid which is not optically active is

(A) glycine

(B) alanine

(C) serine

(D) lactic acid

Answer: (A)


The amount of heat evolved when 500 cm3 of 0.1 M HCI is mixed with 200 cm3 of 0.2 M NaOH is ______.

(A) 1.292 kJ

(B) 2.292 kJ

(C) 3.392 kJ

(D) 0.292 kJ

Answer: (B)


The angle strain in cyclobutane is

(A) 24°44′

(B) 29°16′

(C) 19°22′

(D) 9°44′

Answer: (D)


The basic principle of Cottnell’s precipitator is

(A) Le-chatelier’s principle

(B) peptisation

(C) neutralisation of charge on colloidal particles

(D) scattering of light

Answer: (C)

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