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:

One kilobyte is equal to:

• 1024 bytes
• 2048 bytes
• 1023 bytes
• 10000 bytes
Correct Option: A  [ 1024 bytes ]

Remark:

The salinity of the sea water is:

• 1.5 %
• 2.5 %
• 3.5 %
• 4.5 %
Correct Option: C  [ 3.5 % ]

Remark:

Which of the following pair is incorrect ?

• Roentgen : X-ray
• Newton : Law of Gravitation
• Faraday : Diffusion of gases
• Pasteur : Bacteriology
Correct Option: C  [ Faraday : Diffusion of gases ]

Remark:

The virus infection causes AIDS is known as

• HIV
• HID
• DIV
• None of theses
Correct Option: A  [ HIV ]

Remark:

The stars twinkle at night because:

• they emit energy
• of diffraction
• of refraction
• of relection
Correct Option: C  [ of refraction ]

Remark:

"Seahorse" is a:

• Mammal
• Plant
• Fish
• None of the above
Correct Option: C  [ Fish ]

Remark: Seahorse (Hippocampus) is a tiny fish that named for the shape of its head, which looks like the head of a tiny horse. There are at least 50 species of seahorses.

In plants, extra-chromosomal DNA is found in

• Nucleus
• Chloroplast
• Ribosome
• Golgi bodies
Correct Option: B  [ Chloroplast ]

Remark: In many cases, extrachromosomal DNA is contained in cytoplasmic organelles, such as mitochondria (animals), and in chloroplasts and plastids (plants).

Body temperature of a healthy human body is usually around:

• 98.4 ?
• 37 ?
• 14.5 ?
• 25 ?
Correct Option: B  [ 37 ? ]

Remark:

Which of the following is not correctly matched ?

• Becquerel : Radioactivity
• Alexander Flaming : Penicillin
• Louis Pasteur : Blood groups
• William Harvey : Blood circulation
Correct Option: C  [ Louis Pasteur : Blood groups ]

Remark: