191. If a molecule contains more than one functional group, It is known as:
A. Isomer
B. Heterocyclic
C. Derivative
D. Polyfunctional
192. When water vapours are passed over white anhydrous copper sulphate, which color is formed?
A. White
B. Yellow
C. Deep blue
D. Brown
193. Lassaigne’s solution is prepared in the detection of the elements of organic compounds. Which of the following metal is used for the reaction with organic compound?
A. Iron
B. Copper
C. Aluminium
D. Sodium
194. Major portion of natural gas is:
A. Ethane
B. Methane
C. Propane
D. Butane
195. If a liquid has PH 7 then it must?
A. Be a colourless and odourless liquid
B. Freeze at 0 Degree centigrade and boil at 100 degree centigrade
C. Be neutral
D. Be a solution containing water
196. A reverse reaction is not that?
A. Which takes place from left to right
B. In which reactants react to from products
C. Which slows down gradually
D. Which speeds up gradually
197. In the lime kiln the reaction CaCO3—>CaO+CO2 goes to completion because of?
A. High temperature
B. CaO is more stable than CaCO3
C. CO2 escapes out continuously
D. CaO is not dissociated
198. Neil Bohr presented the atomic model in?
A. 1907
B. 1909
C. 1910
D. 1913
199. The element which is present in liquid state at room temperature is?
A. Bromine
B. Nitrogen
C. Chlorine
D. Phosphorous
200. The percentage value of O2 by weight in the atmosphere is?
A. 47%
B. 86%
C. 78%
D. 21%
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