181. Which of the
following has coordination bond?
A) N2
B) CaCl2
C) O3
D) H2O
182. What will be the pH at 25oC containing 0.10 M
CH3COONa and 0.03 M CH3COOH. pKa for CH3COOH = 4.57.
A) 4.87
B) 3.33
C) 5.09
D) 4.05
183. The function of alum used for the purification of
water is to
A) coagulate the sol particles
B) disperse the sol particles
C) emulsify the sol particles
D) absorb the sol particles
184. Which one of the following is metal?
A) C
B) N
C) Na
D) O
185. Which non-metal is found in liquid state at room
temperature?
A) Mercury
B) Zinc
C) Iodine
D) Bromine
186. Oxides of non metals are _______ in nature.
A) Basic
B) Acidic
C) Neutral
D) Amphoteric
187. Which gas is produced when metal react with acids ?
A) Oxygen
B) Nitrogen
C) Hydrogen
D) Carbon dioxide
188. Which of the
following can be shown to be both a Bronsted acid and a Bronsted base?
A) O-2
B) HSO4-1
C) PO4-3
D) CN-1
189. An example of
an emulsifying agent would be _________.
A) Oil
B) Soap
C) Water
D) Salt
190. Which is not an organic compound ?
A) methanol
B) acetonitrile
C) sodium cyanideD) phenol
191. In benzene, each carbon atoms undergoes
A) sp
B) sp2
C) sp3
D) sp2 and sp3 hybridisation
192. The shortest C-C bond distance is found in:
A) ethane
B) ethene
C) ethyne
D) diamond
193. Propene reacts with HBr in presence of organic
peroxide to form:
A) 1-Bromopropane
B) 2-Bromopropane
C) 3-Bromopropane
D) 2-Bromopropene
194. The strongest acid among the following is:
A) C2H6
B) C3H8
C) C2H4
D) C2H2
195. The compound formed as a result of oxidation of
ethyl benzene by KMnO4 is
A) Benzoic acid
B) Acetophenone
C) Benzophenone
D) Benzyl alcohol
196. Which acid is used in the manufacture of synthetic
rubber?
A) Acetic acid
B) Formic acid
C) Carbonic acid
D) Benzoic acid 197.
Not a characteristic property of ceramic material
A) high temperature
stability
B) high mechanical strength
C) low elongation
D) low hardness
198. Increasing concentration of CO2 in atmosphere is
responsible for:
A) acid rain
B) greenhouse effect
C) lack of photosynthesis
D) death of aquatic life
199. The coating on modern non- stick cookware and
electric iron is of
A) Terrycot
B) Rayon
C) Polyester
D) Teflon
200. For corrosion of iron to take place
A) Presence of
moisture is sufficient
B) Presence of
moisture and oxygen is essential
C) Hydrogen is required
D) A strong acid is necessary
