(A) Chlorine
(B) Ozone
(C) Ammonia
(D) Carbon Dioxide
Plastic material commonly used for making gear wheels is?
(A) Bakelite
(B) Nylons
(C) Polyesters
(D) Polystyrene
Velocity of heat radiation in vacuum is?
(A) Less than that of light
(B) Equal to that of light
(C) Greater than that of light
(D) Equal to that of sound
An ice block with a piece of lead embedded in it floats in water. If ice melts the water level?
(A) Remains same
(B) Falls
(C) Rises
(D) Falls first and then rises.
Boyle’s law holds good for any gas at?
(A) High temperature and low pressures
(B) High temperature and high pressures
(C) Low temperature and high pressures
(D) Low temperature and low pressures
Who is the author of the book ”Freedom Fear”?
(A) Aung San Suukye
(B) Nelson Mandela
(C) Taslima Nasreen
(D) Benazir Bhutto
Name the first country who made silk about 4000 years ago?
(A) Japan
(B) India
(C) Egypt
(D) China
The house or shelter of an Eskimo is called?
(A) Tepee
(B) Dowar
(C) Igloo
(D) Wigwam