The hottest part of the gas flame is known as:

• luminous zone
• dark zone
• blue zone
• non-luminous zone
Correct Option: D  [ non-luminous zone ]

Remark:

If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by:

• mercury
• lead
• iron
• arsenic
Correct Option: B  [ lead ]

Remark:

Which of the following is not a property of acids ?

• All acids have sour taste
• All acids are corrosive in nature
• For acidic solutions pH = <7
• Acids turn red litmus to blue
Correct Option: D  [ Acids turn red litmus to blue ]

Remark:

Green Revolution is associated with:

• Agriculture
• Sericulture
• Fishery
• Cultivation of bees
Correct Option: A  [ Agriculture ]

Remark:

Purity of milk is tested by:

• Electrometer
• Lactometer
• Radiometer
• Refractometer
Correct Option: B  [ Lactometer ]

Remark:

Which of the following contains maximum carbon dioxide ?

• Grasslands
• Forests
• Oceans
• Agroecosystems
Correct Option: C  [ Oceans ]

Remark:

The Bhopal Gas Tragedy was caused by :

• Phosgen gas
• Carbon monoxide
• Methyl isocyanate
• Chlorine
Correct Option: C  [ Methyl isocyanate ]

Remark: On 2–3 December, 1984 at the Union Carbide India Limited (UCIL) pesticide plant.

Which of the following cell organelles is referred to as the 'suicidal bags' or 'disposal units' ?

• Lysosome
• Peroxisomes
• Glyoxisomes
• Mtochondria
Correct Option: A  [ Lysosome ]

Remark:

If a liquid is heated in space under no gravity, the transfer of heat will take place by process of:

• conduction
• convection
• radiation
• cannot be heated in the absence of gravity
Correct Option: C  [ radiation ]

Remark:

Atom bomb is based on:

• Chemical reaction
• Nuclear fission
• Nuclear fusion
• Atomic collision
Correct Option: B  [ Nuclear fission ]

Remark: