What changes will happen to a ball of ice and water kept at exactly zero degree Celsius?

• All ice will melt
• All water will become ice
• No change will happen
• Only some ice will melt
Correct Option: C  [ No change will happen ]

Remark:

The sky looks blue due to

• Dispersion of Sunlight
• Scattering of Sunlight
• Refraction of Sunlight
• None of these
Correct Option: B  [ Scattering of Sunlight ]

Remark: The scattering of sunlight is a phenomenon that occurs when sunlight interacts with particles or molecules in the Earth's atmosphere, causing the light to change direction and spread out in various directions.

In medical terminology, USG stands for:

• Undersized gland
• Ultrasonography
• Unsegmented gonads
• None of the above
Correct Option: B  [ Ultrasonography ]

Remark:

Einstein received Nobel Prize for his theory of :

• Relativity
• Photoelectricity
• Brownian Motion
• None of these
Correct Option: B  [ Photoelectricity ]

Remark:

Which of the following statements is correct ?

• Red insulated wire is called 'live' wire
• Black insulated wire is called 'neutral' wire
• Green insulated wire is called 'earthing'
• All of the above
Correct Option: D  [ All of the above ]

Remark:

Which of the following is not an element ?

• Oxygen
• Nitrogen
• Hydrogen
• Marble
Correct Option: D  [ Marble ]

Remark:

In which year was the "@" chosen for its use in e-mail addresses?

• 1972
• 1976
• 1980
• 1984
Correct Option: A  [ 1972 ]

Remark:

Domestic cooking gas consists of mostly:

• Methane and ethane
• Liquifed butane and isobutane
• Ethylene and carbon monoxide
• Hydrogen and acetylene
Correct Option: A  [ Methane and ethane ]

Remark:

Which of the following is the first calculating device ?

• Abacus
• Calculator
• Turing machine
• Pascaline
Correct Option: A  [ Abacus ]

Remark:

To an astronaut in space, the sky appears to be:

• Red
• White
• Dark
• Blue
Correct Option: C  [ Dark ]

Remark: