Q:

Which of the following is not a transverse wave?

A) Light waves	B) Radio waves
C) Sound waves	D) All the above

Answer & Explanation Answer: C) Sound waves

Explanation:

Light and Radio waves are both different frequency/wavelengths of electromagnetic radiation, which consists of two components electric and magnetic of perpendicular, transverse waves.

Sound, on the other hand, is a longitudinal wave which oscillates parallel to it's medium (back and forth instead of up and down).

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Filed Under: Physics
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14 6905

Q:

In photography, the compound of nitrogen used is

A) Potassium nitrate	B) Silver nitrate
C) Ammonium carbonate	D) Ammonium bicarbonate

Answer & Explanation Answer: B) Silver nitrate

Explanation:

Silver nitrate is the basic substance from which silver bromide is obtained. The photographic films are impregnated with the light sensitive AgBr.

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Filed Under: Chemistry

12 6902

Q:

The main constituent of biogas is

A) Butane	B) Methane
C) Hydrogen Sulphide	D) Carbondioxide

Answer & Explanation Answer: B) Methane

Explanation:

The main constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia.

Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.

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4 6899

Q:

The richest source of Vitamin D from food is

A) Cotton seed oil	B) Olive oil
C) Cod liver oil	D) Sunflower oil

Answer & Explanation Answer: C) Cod liver oil

Explanation:

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Filed Under: Biology
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23 6893

Q:

The most important official post with vast responsibilities created by Ashoka was

A) Rajuka	B) Yukta
C) Dharamamahamatya	D) Prativedaka

Answer & Explanation Answer: C) Dharamamahamatya

Explanation:

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Filed Under: Indian History

5 6893

Q:

October 3 is observed as _______

A) World Vegetarian Day	B) United Nations Day for South-South Cooperation
C) World Immunization Day	D) World Smile Day

Answer & Explanation Answer: D) World Smile Day

Explanation:

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Filed Under: Important Days and Years

6 6893

Q:

Gammaxene, D.D.T. & Bleaching powder are important compounds of

A) Nitrogen	B) Phosphorus
C) Chlorine	D) Sulphur

Answer & Explanation Answer: C) Chlorine

Explanation:

Gammaxene, D.D.T. & Bleaching powder are important compounds of Chlorine.

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Filed Under: Chemistry
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5 6889

Q:

In the context of stock Market, the abbreviation IPO stands for

A) Immediate Payment Order	B) Internal Policy Obligation
C) Initial Public Offering	D) None of these

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