The phenomenon of radioactivity was discovered by:

• Marie Curie
• Pierre Curie
• Henri Becquerel
• J J Thomson
Correct Option: C  [ Henri Becquerel ]

Remark:

The time period of a pendulum when taken to the Moon would:

• remain the same
• decrease
• become zero
• increase
Correct Option: D  [ increase ]

Remark:

Which of the following adds/add carbon dioxide to the carbon cycle on the planet earth ?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
(Select correct answer)

• 1, 2 and 4 only
• 1 and 3 only
• 2 only
• 1, 2 and 3 only
Correct Option: A  [ 1, 2 and 4 only ]

Remark:

Which one of the following solutions will not turn blue litmus to red litmus?

• Lemon juice
• Acetic acid
• Sodium hydroxide
• Hydrochloric acid
Correct Option: C  [ Sodium hydroxide ]

Remark:

The highest tides occur at the time of the new moon and the:

• full moon
• solar eclipse
• lunar eclipse
• volcanoes
Correct Option: A  [ full moon ]

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:

Which acid is released when an Ant bites?

• Hydrochloric Acid
• Formic Acid
• Acetic Acid
• Phosphoric Acid
Correct Option: B  [ Formic Acid ]

Remark:

Which part is modified as the tusk of elephant?

• canine
• premolar
• second incisor
• molar
Correct Option: C  [ second incisor ]

Remark:

Heavy water is :

• Ice
• Water at 4 degree Celsius
• Deuterium oxide
• Solution of sugar and water
Correct Option: C  [ Deuterium oxide ]

Remark:

The study of hair and its diseases is known as:

• Penology
• Trichology
• Penology
• Pomology
Correct Option: B  [ Trichology ]

Remark: