486: Most of the explosions in mines occur due to the mixing of
(a) hydrogen with oxygen
(b) oxygen with acetylene
(c) methane with air
(d) carbon dioxide with ethane
487: Assertion (A) :
The emphasis of Jainism on non-violence (ahimsa) prevented agriculturalists from embracing Jainism.
Reason (R) :
Cultivation involved killing of insects and pests.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
488: The process of retting in jute is
(a) Purely physical
(b) Purely chemical
(c) Microbiological
(d) Physico-chemical
489: Reading of the barometer going down is an indication of:
(a) Storm
(b) Rainfall
(c) Snow
(d) Intense heat
490: The contribution of India's small-scale sector to the gross turnover in the manufacturing sector since 1992 has been of the order of
(a) 40%
(b) 34%
(c) 30%
(d) 45%