Chemistry Exam GK Question
Q91. Which of the following partial miscible liquid pairs has both lower and upper critical solution temperature
(a) Water and Phenol
(b) Aniline and n-hexane
(c) Glycerine and m-toluene
(d) Water and diethyl aniline
Answer: (c) Glycerine and m-toluene
Q92. Which of the following electrodes is used in strongly alkaline solution
(a) Mercury - mercuric oxide electrode
(b) Mercury - mercurous sulphate electrode
(c) Mercury - mercurous chloride electrode
(d) Silver - silver chloride electrode
Answer: (a) Mercury - mercuric oxide electrode
Q93. The product, 9-nitroanthracene is obtained from anthracene by the action of
(a) Nitric acid and acetic anhydride
(b) Nitric acid and ethyl alcohol
(c) Nitric acid and acetic acid
(d) Nitric acid in excess
Answer: (a) Nitric acid and acetic anhydride
Q94. Which of the following kinds of spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition
(a) UV absorption spectroscopy
(b) UV photoelectron spectroscopy
(c) Infrared absorption spectroscopy
(d) Rotational spectroscopy
Answer: (b) UV photoelectron spectroscopy
Q95. The third shell of an atom can have a maximum of ______ electrons
(a) 13
(b) 15
(c) 18
(d) 21
Answer: (c) 18
Q96. Which of the following has least negative electron gain enthalpy
(a) P
(b) S
(c) Cl
(d) F
Answer: (a) P
Q97. Among the following, carbonate ore of Zinc is
(a) Zincblende
(b) Calamine
(c) Sphalerite
(d) Zincite
Answer: (b) Calamine
Q98. Neoprene is prepared by polymerisation of which of the following
(a) 2-chloro-1, 3-butadiene
(b) 2-methyl 1, 3-butadiene
(c) 1,3-butadiene
(d) Acrylonitrile
Answer: (a) 2-chloro-1, 3-butadiene
Q99. The monomers of dacron are
(a) decane and decanol
(b) decanone and decanol
(c) Ethylene glycol and terephthalic acid
(d) Ethylene glygol and phthalic acid
Answer: (c) Ethylene glycol and terephthalic acid
Q100. The example of oligosaccharide is
(a) Sucrose
(b) Glucose
(c) Ribose
(d) Cellulose
Answer: (a) Sucrose
Q101. Which of the following is not a derivative of barbituric acid
(a) Nembutal
(b) Amytal
(c) Veronal
(d) Equanil
Answer: (d) Equanil
Q102. Which of the following acts as promoter for iron in Haber's process
(a) Mn
(b) Mo
(c) Mg
(d) W
Answer: (b) Mo
Q103. An oxidising agent is a
(a) An electron acceptor
(b) An electron donor
(c) In a chemical reaction its oxidation number increases
(d) It releases H2 in a chemical reaction
Answer: (a) An electron acceptor
Q104. The aprotic solvent is
(a) H2O
(b) C6H6
(c) HF
(d) NH3
Answer: (c) HF
Q105. What is the covalency of nitrogen in ammonia molecule
(a) 2
(b) 3
(c) 4
(d) 5
Answer: (b) 3
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