Q:

The _____ controls communications for the entire computer system

A) arithmetic-logic unit	B) semiconductor
C) motherboard	D) coprocessor

Answer & Explanation Answer: C) motherboard

Explanation:

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69 18293

Q:

How many members were Initially there in the Constituent assembly of India

A) 300	B) 304
C) 308	D) 310

Answer & Explanation Answer: A) 300

Explanation:

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Filed Under: Indian Politics

42 18286

Q:

NH3 oxidation number?

A) -1	B) +1
C) 0	D) -3

Answer & Explanation Answer: C) 0

Explanation:

NH3, Ammonia is a neutral compound as the individual oxidation numbers elements that make up the compound NH3 are Nitrogen (N) and Hydrogen (H) sum to zero.

We do not speak of the oxidation number of a molecule. We can speak of the oxidation numbers of the individual elements that make up the compound.

Here the oxidation number of Nirogen is -3 and that of Hydrogen is +1.

Now, NH3 = 1(-3) + 3(+1) = -3 + 3 = 0.

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31 18258

Q:

The basic reason for the extraordinary sparkle of suitably cut diamond is that

A) it has well defined cleavage planes	B) it has a very high transparency
C) it has a very high refractive index	D) it is very hard

Answer & Explanation Answer: C) it has a very high refractive index

Explanation:

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95 18239

Q:

In an economy , the sectors are classified into public and private on the basis of

A) employment conditions	B) nature of economic activities
C) ownership of enterprises	D) use of raw materials

Answer & Explanation Answer: C) ownership of enterprises

Explanation:

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31 18211

Q:

In which of the following cases, the Supreme Court held that fundamental rights are unamendable?

A) A.K.Gopalan's case	B) Keshvananda Bharati's case
C) M.C Mehta's case	D) Golak Nath's case

Answer & Explanation Answer: D) Golak Nath's case

Explanation:

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91 18193

Q:

Find the Missing Numbers in the given Number Puzzle ?

A) 169 & 81	B) 67 & 121
C) 64 & 115	D) 70 & 110

Answer & Explanation Answer: A) 169 & 81

Explanation:

Observe that in each column, square of sum of digits in the first row = Respective second row elements.

In the same way, square of sum of digits in the second row = Respective third row elements.

=> ${(6 + 4)}^{2} = 10^{2} = 100$

=> ${(4 + 9)}^{2} = 13^{2} = 169$

=> ${(8 + 1)}^{2} = 9^{2} = 81$ .

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97 18191

Q:

What is the IUPAC name of [Co(NH3)4Cl2]?

A) Tetra-ammine dichloro cobalt (III) chloride	B) Tetra-ammine trichloro cobalt (III)
C) Tri-ammine dichloro cobalt (III) chloride	D) Tetra-ammine dichloro cobalt

Answer & Explanation Answer: A) Tetra-ammine dichloro cobalt (III) chloride

Explanation:

The IUPAC nomenclature in organic chemistry is a systematic method that is used to name organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

The IUPAC name of the given complex [Co (NH₃)₄Cl₂ ]Cl is - Tetra-ammine dichloro cobalt (III) chloride.

The complex [Co (NH₃)₄ Cl₂ ] Cl ionizes an aqueous solution to furnish the chloride ion Cl⁻ and [Co (NH₃)₄ Cl₂ ] ⁺.

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18 18190

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