Q:

Which best describes how air moves during convection?

A) cool air falls down	B) warm air falls down
C) cool air is replaced by warm air	D) air always falls down

Answer & Explanation Answer: A) cool air falls down

Explanation:

During convection, cool and dense air falls through the warmer and less dense air. The warm air having less mass is being displaced by the cooler which is much heavy. Convection always involves the air rising through the atmosphere.

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Q:

The Most Important Ore of Aluminium is

A) Calamine	B) Monazite
C) Magnetite	D) Bauxite

Answer & Explanation Answer: D) Bauxite

Explanation:

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Q:

The First step of Bacterial Replication is

A) Pinching of the plasma membrane	B) Separation of daughter cells
C) Attachment of the DNA to the plasma membrane	D) DNA Replication

Answer & Explanation Answer: D) DNA Replication

Explanation:

The First step of Bacterial Replication is DNA Replication.

DNA must be copied in order to proceed.

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Q:

Oparin is known for his hypothesis on

A) origin of species	B) origin of life
C) one germ one disease	D) one gene one enzyme

Answer & Explanation Answer: B) origin of life

Explanation:

A. J . Oparin was the first to propose the origin of life from inorganic chemical atoms like Oxygen, Hydrogen, Nitrogen and Carbon.

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Filed Under: Biology

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Q:

Which one of the following breeds of sheep has been imported to increase wool production in india ?

A) Chokla	B) Magra
C) Bellary	D) Merino

Answer & Explanation Answer: D) Merino

Explanation:

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Q:

How many Nephrons are in each kidney?

A) 10,000	B) 1,00,000
C) 1,000,000	D) 1000

Answer & Explanation Answer: C) 1,000,000

Explanation:

There are about 1,000,000 nephrons in each human kidney.

Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.

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Q:

Who among the following is the creator of the Rock Garden in Chandigarh

A) Le Corbousier	B) Pupul Jayakar
C) Nek Chand	D) Kamaladevi Chattopadhyay

Answer & Explanation Answer: C) Nek Chand

Explanation:

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Q:

The expoundrer of Yoga philosophy was

A) Patanjali	B) Gautam
C) Jaimini	D) Sankaracharya

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