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A woman’s voice is shriller than a man’s due to _________?

0

A. Higher frequency
B. Lower frequency
C. Higher amplitude
D. Weak vocal chords

Answer

Answer

A. Higher frequency

Submitted by: Toheed Ahmed

Which gas is used in the preparation of soft drinks?

0

A. Oxygen
B. Carbon dioxide
C. Halogens
D. Nitrogen

Answer

Answer

B. Carbon dioxide

Submitted by: Toheed Ahmed

Why are soft drinks made with chilled water rather than water at room temperature?

0

A. Chilled water is more hygienic
B. Chilled water enhances the taste
C. Ingredients dissolve better in chilled water
D. Chilled water attracts more carbon dioxide

Answer

Answer

D. Chilled water attracts more carbon dioxide

Submitted by: Toheed Ahmed

Coke is made by heating coal in the absence of air at:

0

A. 700°C
B. 1300°C
C. 900°C
D. 1700°C

Answer

Answer

B. 1300°C

Submitted by: Toheed Ahmed

In blood, the percentage of water is ________?

0

A. 75%
B. 85%
C. 90%
D. 95%

Answer

Answer

C. 90%

Submitted by: Toheed Ahmed

As the temperature of ice rises, the ice melts and its density

0

A. Remains constant
B. Decreases
C. Increases
D. Increases upto 10 °C

Answer

Answer

C. Increases

Submitted by: Toheed Ahmed

Water is a universal solvent for what reactions.

0

A. Biochemical
B. Physical
C. Chemical
D. Nuclear

Answer

Answer

A. Biochemical

Submitted by: Toheed Ahmed

The volume percentage of nitrogen in air is _________?

0

A. 60%
B. 67%
C. 74%
D. 78%

Answer

Answer

D. 78%

Submitted by: Toheed Ahmed

Nitrogen occur in plants and animals in the form of __________?

0

A. Proteins
B. Fats
C. Carbohydrastes
D. Minerals

Answer

Answer

A. Proteins

Submitted by: Toheed Ahmed

Air contains volume of carbon dioxide approximately;

0

A. 3%
B. 33%
C. 0.3%
D. 0.03%

Answer

Answer

D. 0.03%

Submitted by: Toheed Ahmed

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