The weight of a body at the centre of the earth is:

• zero
• infinite
• same as at other places
• none of these
Correct Option: A  [ zero ]

Remark:

Oxidation is a process which involves

• addition of Oxygen.
• addition of Hydrogen.
• removal of Oxygen.
• addition of Nitrogen.
Correct Option: A  [ addition of Oxygen. ]

Remark: the term "oxidation" is defined as the addition of oxygen/electronegative element to a substance or removal of hydrogen/electropositive element from a substance.

Which of the following is the largest ecological unit ?

• Organism
• Population
• Biome
• Ecosystem
Correct Option: C  [ Biome ]

Remark:

Which of the following processes is responsible for transforming liquid into vapour ?

• Condensation
• Evaporation
• Transpiration
• Sublimation
Correct Option: B  [ Evaporation ]

Remark:

Which of the following diseases is not caused by virus ?

• Small pox
• AIDS
• Flue
• Malaria
Correct Option: D  [ Malaria ]

Remark:

In which of the following processes energy is released ?

• respiration
• photosynthesis
• ingestion
• absorption
Correct Option: A  [ respiration ]

Remark:

The sex of a newborn baby is determined by the chromosome inherited from :

• the mother
• mother's mother
• the father
• father's father
Correct Option: C  [ the father ]

Remark:

Which of the following allow the electric current to pass through it ?

• Glasses
• Graphite
• Rubber
• PVC
Correct Option: B  [ Graphite ]

Remark:

What is the unit for measuring the intensity of sound ?

• Decibel
• Coulomb
• Henry
• Hertz
Correct Option: A  [ Decibel ]

Remark:

J J Thomson received the Nobel Prize in Physics for the discovery of ________.

• Protons
• Electrons
• Neutrons
• Positrons
Correct Option: B  [ Electrons ]

Remark: