Q:

What is the bond order of N2+?

A) 3	B) 1.5
C) 2.5	D) 2

Answer & Explanation Answer: C) 2.5

Explanation:

Bond Order = 1/2[ Nb - Na]

where

Nb = Number of electrons in bonding molecular orbitals.

Na = Number of Electrons in antibonding molecular orbitals

Bond Order of N2⁺:

Total number of electrons: 13

Electronic Configuration= :σ1s² σ*1s² σ2s² σ*2s² π 2py² [π2pz² σ2px1 ]

Bond Order = [9-4]/2 = 5/2 = 2.5.

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Q:

Which one of the following laws explain the formation of carbon monoxide and carbon dioxide from carbon and oxygen

A) Laws of conservation of mass	B) Laws of multiple proportion
C) Laws of reciprocal proportions	D) Law of definite proportions

Answer & Explanation Answer: B) Laws of multiple proportion

Explanation:

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Filed Under: Chemistry

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Q:

Who was the first Mughal Emperor to acquire Koh-i-nur diamond?

A) Humayun	B) Akbar
C) Jahangir	D) Shah Jehan

Answer & Explanation Answer: A) Humayun

Explanation:

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Filed Under: Indian History

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Q:

' A Valley of ten thousand smokes' is the name given to a zone near the volcano

A) Mauna loa of Hawaie	B) Pinatabu of Philippines
C) Pelle in the Caribbean sea	D) Katmai of Alaska

Answer & Explanation Answer: D) Katmai of Alaska

Explanation:

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Q:

The highway transportation system is coordinated by

A) Department of Transportation	B) Your local police department
C) The Department of Education	D) The Internal Revenue Service

Answer & Explanation Answer: A) Department of Transportation

Explanation:

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Q:

Which is the longest snake in the world?

A) Black Mamba	B) Puff Adder
C) Reticulated Python	D) Anaconda

Answer & Explanation Answer: C) Reticulated Python

Explanation:

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Filed Under: Animals and Birds

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Q:

The enzyme that is necessary to bring about clotting of blood is

A) peptidase	B) amylase
C) lipase	D) thrombokinase

Answer & Explanation Answer: D) thrombokinase

Explanation:

The clotting of blood is a chain reaction initiated by the enzyme thrombokinase produced by the platelets. This causes prothrombin to be converted into thrombin in the presence of $C a^{+ +}$ ion.

Thrombin combines with fibrinogen to produce fibrin threads which entangles the corpuscles to form the clot.

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Filed Under: Biology
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Q:

Which of the following is a nucleotide found in DNA?

A) Deoxyribose + Phosphate Group + Polymerase	B) Adenine + Phosphate Group + Thymine
C) Deoxyribose + Phosphate Group + Thymine	D) Cytosine + Phosphate Group + Uracil

Answer & Explanation Answer: C) Deoxyribose + Phosphate Group + Thymine

Explanation:

We know that, the nucleotide in DNA is of the form deoxyribose + phosphate group + polymerase.

Hence, Deoxyribose + Phosphate Group + Thymine is the only option in that form of nucleotide in DNA.

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