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:

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:

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:

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:

................mixtures are used for making a glass

A) Quartz and Mica	B) Salt and Quartz
C) Sand and Salt	D) Sand and Silicates

Answer & Explanation Answer: D) Sand and Silicates

Explanation:

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Q:

The NADPH required for the calvin cycle comes from

A) Reactions initiated in photosystem 1	B) Citric acid cycle
C) Reactions initiated in photosystem 2	D) Glycolysis

Answer & Explanation Answer: C) Reactions initiated in photosystem 2

Explanation:

ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. The Calvin cycle is similar to the Krebs cycle in that the starting material is regenerated by the end of the cycle.

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Q:

Which of the following group does NOT follow Newlands Law of Octaves?

A) Li, Na	B) Be, Mg
C) C, Si	D) Mn, Hg

Answer & Explanation Answer: D) Mn, Hg

Explanation:

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Q:

Which category of Hydrogen releases water vapour and a by product when burnt?

A) Green Hydrogen	B) Blue Hydrogen
C) Red Hydrogen	D) Black Hydrogen

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