Which gas is used as fire extinguisher?

• Nitrogen dioxide
• Carbon monoxide
• Carbon dioxide
• Nitrous oxide
Correct Option: C  [ Carbon dioxide ]

Remark:

Who discovered Lysergic acid diethylamide (LSD)

• Linus Pauling
• Alexander Fleming
• Albert Hofmann
• None of these
Correct Option: C  [ Albert Hofmann ]

Remark: A Swiss scientist.

Muscle fatigue is due to accumulation of

• Carbon Dioxide
• Creatinine
• Lactic acid
• Ethyl alcohol
Correct Option: C  [ Lactic acid ]

Remark:

As per Bureau of Indian Standards (BIS) for drinking water acceptable limit for total hardness as CaCO3 is

• 100 mg/l
• 200 mg/l
• 300 mg/l
• None of these
Correct Option: B  [ 200 mg/l ]

Remark:

Average distance of the earth from the Sun is:

• 150 Million km
• 15 Million km
• 90 Million km
• 900 Million km
Correct Option: A  [ 150 Million km ]

Remark:

Green leafy vegetable are rich source of :

• Citric acid
• Malic acid
• Folic acid
• none of these
Correct Option: C  [ Folic acid ]

Remark:

Which of the following diseases is not caused by bacteria?

• Cholera
• Typhoid
• Tuberculosis
• Chickungunya
Correct Option: D  [ Chickungunya ]

Remark:

Ramsar Convention is for the conservation of:

• Mountain
• Grassland
• Forest
• Wetland
Correct Option: D  [ Wetland ]

Remark:

Which of the following compounds is used in fire extinguishers ?

• Sodium carbonate
• Sodium bicarbonate
• Sodium nitrate
• Sodium sulphate
Correct Option: B  [ Sodium bicarbonate ]

Remark:

Marijuana, a psychoactive drug is obtained from:

• seeds of pop
• capsules of poppy
• female inflorescence of cannabis
• male inflorescence of cannabis
Correct Option: C  [ female inflorescence of cannabis ]

Remark: