Which of the following does not have red blood cells?

• Snake
• Peacock
• Frog
• Earthworm
Correct Option: D  [ Earthworm ]

Remark:

Ozone hole refers to :

• hole in Ozone layer
• decrease in the Ozone layer
• decrease in thickness of Ozone layer
• increase in thickness of Ozone layer
Correct Option: C  [ decrease in thickness of Ozone layer ]

Remark:

Acupuncture is a medical system of treatment in which:

• herbs are used to relieve pain
• needles are inserted into particular parts of the body to relieve pain
• surgery is done to relieve pain
• none of these
Correct Option: B  [ needles are inserted into particular parts of the body to relieve pain ]

Remark:

The longest day in the southern Hemisphere is on :

• 22nd December
• 21st June
• 21st March
• 23rd September
Correct Option: A  [ 22nd December ]

Remark:

Heavy water is :

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

Remark:

White lung disease is prevalent among the workers of:

• paper industry
• cement industry
• cotton industry
• pesticide industry
Correct Option: B  [ cement industry ]

Remark:

What is the full form of USB?

• Unlimited Service Band
• Unlimited Serial Bus
• Universal Serial Bus
• Unlimited Storage Bus
Correct Option: C  [ Universal Serial Bus ]

Remark:

Which of the following is an example of thermoplastics?

• Bakelite
• Melamine
• PVC
• none of these
Correct Option: C  [ PVC ]

Remark:

Quality of petrol is expressed in:

• Gold number
• Cetane number
• Methane number
• Octane number
Correct Option: D  [ Octane number ]

Remark:

Which of the rays is most dangerous ?

• Alpha ray
• Beta ray
• Gama ray
• X-ray
Correct Option: C  [ Gama ray ]

Remark: