Q:

What charge card, developed in 1950, was the first to be approved nationally in the US?

A) Discover	B) MasterCharge
C) Visa	D) Diner's Club

Answer & Explanation Answer: D) Diner's Club

Explanation:

The card was established by Frank McNamara and Ralph Schneider.

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Filed Under: Inventions

4 3885

Q:

When is the Common Wealth Day observed by its member countries

A) January 25	B) May 24
C) October 24	D) November 14

Answer & Explanation Answer: B) May 24

Explanation:

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Filed Under: Important Days and Years

3 3885

Q:

Every year " National Maritime Day of India " is observed on

A) 1st April	B) 2nd Aril
C) 4th April	D) 5th April

Answer & Explanation Answer: D) 5th April

Explanation:

National Maritime Day of India is observed every year on 5th April. On this day in 1919, S S Loyalty, the first ship of the Scindia Steam Navigation Company, journeyed to the United Kingdom.

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Filed Under: Important Days and Years
Exam Prep: Bank Exams

5 3885

Q:

The hormone that helps in the implantation of embryo

A) Testosterone	B) Insulin
C) Prolactin	D) Progesterone

Answer & Explanation Answer: D) Progesterone

Explanation:

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Filed Under: Biology

9 3885

Q:

Acid Precipitation is caused by a mix of

A) Hydrogen, Oxygen, and Saline	B) Water, Soil, and Air
C) Respiration, Carbonic Acids, and Seawater	D) Sulfur Dioxide, Carbon Dioxide, Nitrogen Oxides

Answer & Explanation Answer: D) Sulfur Dioxide, Carbon Dioxide, Nitrogen Oxides

Explanation:

Acid Precipitation or Acid rain is caused by a mix of Sulfur Dioxide, Carbon Dioxide, Nitrogen Oxides.

A Chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as Acid Rains.

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank PO

6 3884

Q:

Why does the sea appear blue in colour?

A) Reflection of the sun light from water surface	B) Interference of the sun light from water surface
C) Scattering of the sunlight by water molecules	D) refraction of the sun light

Answer & Explanation Answer: C) Scattering of the sunlight by water molecules

Explanation:

Sea appears blue in colour due to the scattering of the rays when they hit water molecules

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Filed Under: Physics

1 3884

Q:

Alum is used

A) as an analgesic	B) in the purification of water
C) as a fertilizer	D) as a disinfectant

Answer & Explanation Answer: B) in the purification of water

Explanation:

Alum is a common alum, potassium aluminum sulphate $K_{2} S O_{4} . {(A l_{2} S O_{4})}_{3} . 24 H_{2} O$ which makes colloidally suspended impurities in water such as clay to settle down.

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Filed Under: Chemistry
Exam Prep: AIEEE

4 3882

Q:

Excess of fat in the body is stored in

A) Adipose tissue	B) Acrosome
C) Erythrocytes	D) Bone marrow

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