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Everyday Science Questions & Answers Section 177

Ques No.1: The most important stimulant in tea leaves is _________.

Ans: Caffeine

Ques No.2: Enzymes are __________.

Ans: Biological catalysts

Ques No.3: The acid present in the sour milk is _________.

Ans: Formic acid

Ques No.4: _______ is used in storage batteries.

Ans: Lead

Ques No.5: The velocity of wind is related to _________.

Ans: Pressure gradient

Ques No.6: _________ is used for dating very old objects of archaeological importance.

Ans: Carbon-14

Ques No.7: ________ are the lines connecting the places having same Atmospheric pressure.

Ans: Isobars

Ques No.8: ECG is an instrument used for the _____________.

Ans: disorder of Heart

Ques No.9: The mixture of __________ is required in gas welding.

Ans: Acetylene and oxygen gases

Ques No.10: _________ is used as a raw material in the manufacture of foam used in mattresses, cushions, etc.

Ans: Phenol

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