1. Which one of the following is an example of amphoteric oxide?
Answer: (d)
2. Which one of the following material is used for control rods in Uranium reactors?
(a) Boron Steel
(b) Antimony
(c) Carbon Steel
(d) Titanium
Answer: (a)
3. What is the frequency of the radiation with a wavelength of 10.6 𝜇m, produced by 𝐶𝑂2(𝑔 ) laser?
Answer: (c)
4. What is the concentration of a solution of cane sugar (C12H22O11) which is isotonic with a solution containing 9.0 𝑔 of urea CO(NH2)2?
(a) 34.2 𝑔/𝑙
(b) 51.3 𝑔/𝑙
(c) 25.6 𝑔/𝑙
(d) 17.1 𝑔/𝑙
Answer: (b)
5. What is the correct order of boiling points for the following hydrides?
Answer: (b)
6. When a suitable fraction from petroleum distillation (C12 and higher) is heated at high temperature (500°𝐶) in the presence of a catalyst the molecule break apart and rearrange to smaller, more highly branched alkanes having 5-10 carbon atoms. This process is called as:
(a) Thermal cracking
(b) Catalytic cracking
(c) Octane rating
(d) Knocking
(b) Catalytic cracking
(c) Octane rating
(d) Knocking
Answer: (b)
7. High speed engines require:
(a) Same octane value fuel
(b) High octane value fuel
(c) Low octane value fuel
(d) Average octane value fuel
(a) Same octane value fuel
(b) High octane value fuel
(c) Low octane value fuel
(d) Average octane value fuel
Answer: (c)
8. Which one of the following will act as a catalyst for selectoforming (a mild hydrogeneration process) in petroleum refining?
(a) Non-metals
(b) Non-noble metals
(c) Noble metals
(d) Transition metals
(a) Non-metals
(b) Non-noble metals
(c) Noble metals
(d) Transition metals
Answer: (b)
9. Hydrocracking is a process of cracking in the presence of:
(a) Water
(b) Hydrogen
(c) Hydroxide
(d) Hydrides
(a) Water
(b) Hydrogen
(c) Hydroxide
(d) Hydrides
Answer: (b)
10. Propane has a heat of vaporization of 101.8 cal/g at −42.1°𝐶, and its critical constant is 96.7°𝐶. The heat of vaporization at 80°𝐶 will be:
(a) 50.4 cal /𝑔
(b) 45.6 cal /𝑔
(c) 40.4 cal/𝑔
(d) 35.6 cal/𝑔
(a) 50.4 cal /𝑔
(b) 45.6 cal /𝑔
(c) 40.4 cal/𝑔
(d) 35.6 cal/𝑔
Answer: (b)
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