Q:

Which statement about electrons and atomic orbitals is NOT true?

A) An orbital can contain a minimum of two electrons	B) An electron has the same amount of energy in all orbitals
C) An atom’s lowest energy level has only two orbitals	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Yes, all the given statements are NOT true about electrons and atomic orbitals.

True statements are ::

An orbital can contain a maximum of two electrons.

An atom’s lowest energy level has only one orbital.

An electron has different amount of energies in all orbitals.

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Filed Under: Chemistry
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Q:

The maximum number of hydrogen bonds in a water molecule is...........

A) 1	B) 3
C) 4	D) 2

Answer & Explanation Answer: C) 4

Explanation:

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Filed Under: Chemistry

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Q:

During Pleistocene epoch, four glacial phases were identified. Which one of the following is the correct chronological order in which they appeared during this epoch from early times?

A) Gunz - Mindel - Wurm - Riss	B) Gunz - Mindel - Riss - Wurm
C) Wurm - Riss - Mindel - Gunz	D) Mindel - Gunz - Riss - Wurm

Answer & Explanation Answer: B) Gunz - Mindel - Riss - Wurm

Explanation:

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Filed Under: World Geography

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Q:

Extensive planting of trees to increase forest cover is called

Extensive_planting_of_trees_to_increase_forest_cover_is_called1552993768.jpg image

A) Agroforestry	B) Social forestry
C) Afforestation	D) Deforestation

Answer & Explanation Answer: C) Afforestation

Explanation:

The process of extensive planting of trees or seeds in barren lands to increase forest cover is called as Afforestation.

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Filed Under: General Science
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Q:

A convex mirror is used to form an image of a real object. The image

A) is diminished in size	B) is erect
C) always lies between the pole and the focus	D) all of the above

Answer & Explanation Answer: D) all of the above

Explanation:

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Filed Under: Physics

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Q:

1990 was declared as the SAARC year

A) Of shelter for the homeless	B) Of girl child
C) Of mutual cooperation	D) Against drug abuse

Answer & Explanation Answer: A) Of shelter for the homeless

Explanation:

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Filed Under: Important Days and Years

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Q:

Which of the following authors won the booker prize twice

A) Margaret Atwood	B) Ian Mc Ewan
C) J.M. Coetzee	D) Graham Swift

Answer & Explanation Answer: C) J.M. Coetzee

Explanation:

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Filed Under: Honours and Awards

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Q:

Saliva contains an Enzyme called

Answer

Amylase, also called Ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine is the Enzyme present in Saliva.

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