(b) Elephant
(c) Dolphin
(d) Human Being
Ans: (c) Dolphin
132) An artificial satellite can be tracked very precisely from the earth by using
(a) Doppler effect
(b) Radar
(c) Sonar
(d) Pulsar
Ans: (a) Doppler effect
133) Five bulbs each of 100 watt capacity in a tunnel are illuminated continuously for twenty hours. The consumption of electricity will be :
(a) One unit
(b) Two units
(c) Ten units
(d) Twenty units
Ans: (c) Ten units
134) If an unsaturated sugar solutionis prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change?
(a) mass
(b) density
(c) concentration
(d) volume
Ans: (d) volume
135) A mobile phone charger is
(a) An inverter
(b) A UPS
(c) A step up transformer
(d) A step down transformer
Ans: (d) A step down
136) The stones present in the gall bladder affect the digestion of :
(b) Fat
(c) Carbohydrate
(d) Nucleic acid
Ans: (b) Fat
137) Which one of the following is not genetic disease?
(b) Albinism
(c) Haemophilia
(d) Colour blindness
138) Which one of the following pairs is not correctly matched?Vitamin Role
(b) Vitamin C – antiscorbutic factor
(c) Vitamin D – antisterility factor
(d) Vitamin K – antihaemorrhagic factor
Ans: (c) Vitamin D – antisterility factor
139) Given below are two statements :
Assertion [A] : According to the World Health Organization [WHO] in 1993, there were 16.5 million deaths due to infectious diseases world wide.
Reason [R] : Urbanisation without health planning leads to the spread of such diseases.
Choose the correct answer from the codes given below :
Codes :
(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 the correct explanation of [A]
(c) [A] is true but [R] is false
(d) [A] is false but [R] are true
140) A cut diamond shines brilliantly due to(a) some inherent property
(b) total internal reflection
(c) its molecular structure
(d) absorption of light
