Everyday Science Mcqs

Which of following is the smallest endocrine gland in the human body?

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Which of following is the smallest endocrine gland in the human body?

A. Thyroid gland
B. Pituitary gland
C. Adrenal gland
D. eal gland

PITUITARY-GLAND is the smallest Endocrine gland in our body,which is situated in the Brain. This gland is smallest but is called as—MASTER GLAND as it controlls the production of Harmones from other glands of body also,such as-Thyroid,Ovaries etc.

Which gas is used to extinguish fire?

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Which gas is used to extinguish fire?

A. Nitrous Oxide
B. Methane
C. Carbon Dioxide
D. Carbon Dioxide & Nitrous Oxide

Carbon dioxide (CO2) is used in some hand-held extinguishers and in fixed systems to displace oxygen and smother the fire. CO2 is used in some dry chemical (powder) hand-held and wheeled extinguishers as a propellant to expel the agent (dry chemical) which, through a chemical reaction, extinguishes the fire.

Fan was invented by___________?

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Fan was invented by___________?A. Arthur Schimit
B. Alfered Nobel
C. Skaats Wheeler
D. None of these

The fan was invented in 1882 by Schuyler Skaats Wheeler. A few years later, Philip Diehl mounted a fan blade on a sewing machine motor and attached it to the ceiling, inventing the ceiling fan, which he patented in 1887.

 

According to which law gas is directly proportional to temperature?

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According to which law gas is directly proportional to temperature?

A. Charles Law
B. Boyles Law
C. Grams Law
D. Dalton’s Law

Charles’s law, or the law of volumes, was found in 1787 by Jacques Charles. It states that, for a given mass of an ideal gas at constant pressure, the volume is directly proportional to its absolute temperature, assuming in a closed system.