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Everyday Science Questions & Answers Section 148

Ques No.1: The temperature of the water below the solid ice layer is _________.

Ans: 4 degree centigrade

Ques No.2: The temperature of the dead body is the _________.

Ans: temperature of the place where it is kept

Ques No.3: Water is a universal solvent for __________.

Ans: Biochemical Reactions

Ques No.4: The German or nickel silver is composed of approximately __________.

Ans: 60% copper, 20% nickel and 20% zinc

Ques No.5: As the temperature of ice rises, ___________.

Ans: the ice melts and its density increases

Ques No.6: ______ is a unit of distance.

Ans: Parsec

Ques No.7: In blood, the percentage of water is ______.

Ans: 90%

Ques No.8: The principle used in radar is the same as that of sonar. In radar we use radio waves; whereas in sonar we use ________.

Ans: Ultrasonic

Ques No.9: _________ is made by heating wood.

Ans: Charcoal

Ques No.10: When a ray of sunlight enters a dark room, its straight path becomes visible because of dust particles hanging in the air. It is because light is __________.

Ans: Transparent

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