1571: Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?
(a) The Earth's magnetic field diverts them towards its poles
(b) Ozone layer around the Earth reflects them back to outer space
(c) Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth
(d) None of the statements (a), (b) and (c) given above is correct
1572: A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel
(a) kills bacteria
(b) kills germs and spores
(c) absorbs moisture
(d) absorbs all gases present inside the bottle
1573: Assertion (A) :
Ashoka annexed Kalinga to the Mauryan Empire.
Reason (R) :
Kalinga controlled the land and sea routes to South India.
(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
1574: Indian has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier?
(A) Japan
(B) Canada
(C) China
(D) Australia
1575: The number of economically active women (excluding students and those doing domestic duties in their homes) as a percentage of all women of working age (generally those aged 15-64 years) was the highest in 1996 in
(a) USA
(b) China
(c) Russia
(d) S. Korea