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

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

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

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

Q95. The third shell of an atom can have a maximum of ______ electrons
(a) 13
(b) 15
(c) 18
(d) 21

Q96. Which of the following has least negative electron gain enthalpy
(a) P
(b) S
(c) Cl
(d) F

Q97. Among the following, carbonate ore of Zinc is
(a) Zincblende
(b) Calamine
(c) Sphalerite
(d) Zincite

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

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

Q100. The example of oligosaccharide is
(a) Sucrose
(b) Glucose
(c) Ribose
(d) Cellulose

Q101. Which of the following is not a derivative of barbituric acid
(a) Nembutal
(b) Amytal
(c) Veronal
(d) Equanil

Q102. Which of the following acts as promoter for iron in Haber's process
(a) Mn
(b) Mo
(c) Mg
(d) W

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

Q104. The aprotic solvent is
(a) H2O
(b) C6H6
(c) HF
(d) NH3

Q105. What is the covalency of nitrogen in ammonia molecule
(a) 2
(b) 3
(c) 4
(d) 5

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