Page-10
Gen. Science
132)Which one of the following is a friction reducing method?
	change over from rolling to sliding		change over from sliding to rolling
	change over from potential energy to kinetic energy		change over from kinetic energy to potential energy
Answer :
133) Isotopes of an element contain same number of
	neutrons but different number of protons		protons but different number of neutrons
	electrons and neutrons		protons and neutrons
Answer :
134)Which one of the following is not a chemical change?
	rusting of iron		magnetization of iron
	digestion of food		conversion of milk into curd
Answer :
135)A freely falling body has uniform
	speed		velocity
	acceleration		weight
Answer :
136) The main constituent of gobar gas is
	hydrogen		ethane
	carbondioxide		methane
Answer :
137)Rate of change of velocity is called
	speed		momentum
	acceleration		weight
Answer :
138)Which one of the following is called \'Adam\'s Apple\' in human body?
	liver		kidney
	thymus		thyroid
Answer :
139)Why the moon does not have atmosphere?
	because of the rocky surface		because of low gravitational pull
	because of low temperature		all of these
Answer :
140)Which colour has got maximum refractive index in glass?
	violet		blue
	green		red
Answer :
141)Which of the following is common bleaching agent?
	sodium chloride		sodium hydroxide
	chlorine		calcium chloride
Answer :
142)Element found in all organic compounds is
	oxigen		carbon
	nitrogen		hydrogen
Answer :
143)Weight of a body in an orbiting satellite is
	same as on earth		more than that of of on earth
	zero		less than that of on earth
Answer :
144)Superconductivity
	increases with temperature		decreases with temperature
	maximum at very low temperature		does not change with temperature
Answer :
145)Liquid exerts pressure equally in all direction. This is
	Boyle\'s law		Pascal\'s law
	Archimedes\' principle		Charles\'s law
Answer :

This is page:10