Which fuel has the maximum calorific value
(a) Cow-dung
(b) Wood
(c) Kerosene
(d) Fat
Answer:
Which one of the following has the highest fuel value
(a) Gasoline
(b) Natural gas
(c) Hydrogen
(d) Charcoal
Answer:
In which type of coal percentage of carbon is the highest
(a) Bituminous
(b) Anthracite
(c) Peat
(d) Lignite
Answer:
The most powerful reducing agent is
(a) Na
(b) Mg
(c) K
(d) Ba
Answer:
The oil used in the flotation method for the purification of ores is
(a) Pine oil
(b) Coconut oil
(c) Olive oil
(d) None of these
Answer:
The inert gas used as beacon light is
(a) He
(b) Ne
(c) Kr
(d) Ar
Answer:
Oxygen was discovered by
(a) Cavendish
(b) Scheele
(c) Priestley
(d) Boyle
Answer:
Denatured spirit is a mixture of ethyl alcohol, methyl alcohol and
(a) Acetone
(b) Water
(c) Acetic acid
(d) Pyridine
Answer:
In Pedology we study about
(a) Soil
(b) Rockes
(c) Disease
(d) Pollution
Answer:
The first step in taxonomy is
(a) Description
(b) Classification
(c) Naming
(d) Identification
Answer: