Chemistry : General Knowledge Questions and Answers

Q91. Which of the following carbon compounds is used as a fire- extinguisher?

[A] Methyl ene chloride

[B] Carbon tetrachloride

[C] Carbon disulphide

[D] Chloroform

Q92. What is the bond angle (in degrees) in the structure of a benzene molecule?

[A] 120

[B] 60

[C] 150

[D] 90

Q93. Which one of the following is used to induce artificial rain?

[A] Ammonium chloride

[B] Potassium Nitrate

[C] Silver lodide

[D] Calcium carbonate

Q94. Which element has similar properties to Beryllium?

[A] Calcium

[B] Manganese

[C] Both A & B

[D] Helium

Q95. The Most Abundant Rare Gas in the Atmosphere is

[A] Ar

[B] Xe

[C] He

[D] Ne

Q96. Positive ions are formed from neutral atoms by loss of

[A] nuclear charge

[B] neutrons

[C] electrons

[D] protons

Q97. The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA ?

[A] 2nd

[B] 1st

[C] 3rd

[D] 4th

Q98. Which of the following acids is present in ant bites?

[A] Formic acid

[B] Nitric acid

[C] Malic acid

[D] Perchloric acid

Q99. Curdling of milk is an example of

[A] Inversion

[B] Coagulation

[C] Denaturation

[D] Hydrolysis

Q100. Which one of the following is a natural colloid?

[A] Sodium chloride solution

[B] Urea solution

[C] Blood

[D] Cane sugar solution