Q:

Which of the following is not soluble in water?

A) sodium chloride	B) potassium sulfate
C) copper(II) hydroxide	D) silver nitrate

Answer & Explanation Answer: B) potassium sulfate

Explanation:

We know that,

All nitrates are soluble in water.

All chlorides are soluble in water with the exception of those formed with silver , lead , mercury ions as all halides are soluble.

Sulphates are soluble in water.

Hydroxides are not soluble in water.

Hence, copper(II) hydroxide is not soluble in water.

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Q:

Who started Shudhi Movement?

A) Dayananda Saraswathy	B) Sri Aurobindo
C) Swami Vivekananda	D) Yashoda Bhai

Answer & Explanation Answer: A) Dayananda Saraswathy

Explanation:

Shudhi Movement was started by Dayananda Saraswathy.

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Q:

Which formula represents a polar molecule?

A) C - O	B) C - N
C) H - N	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

A chemical bond in which the electrons are not shared equally due to differences in the electronegativity of the atoms.

The polarity of a covalent bond is measured using its dipole moment.

 Large dipole moment = more polar

 Small dipole moment = more nonpolar.

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Q:

Valve between the left ventricle and Aorta?

A) Pulmonic valve	B) Tricuspid valve
C) Aortic valve	D) Mitral valve

Answer & Explanation Answer: C) Aortic valve

Explanation:

The Aortic valve - located between the left ventricle and the aorta

The Mitral valve - located between the left atrium and left ventricle

The Tricuspid valve - located between the right atrium and the right ventricle (and)

The Pulmonary (pulmonic) valve - located between the right ventricle and the pulmonary artery.

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Q:

What reacts with oxygen to produce rust?

A) Aluminium	B) Silver
C) Copper	D) Iron

Answer & Explanation Answer: D) Iron

Explanation:

Iron reacts with oxygen in the presence of moisture or water to form a red oxide called rust and the reaction involved is called as Redox reaction.

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Q:

The criminal was __________ lest he should escape.

A) fetid	B) fettered
C) fettled	D) feted

Answer & Explanation Answer: B) fettered

Explanation:

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Q:

The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.

I am _______________this crime.

A) ignorant on	B) innocent of
C) indebted to	D) ignoring

Answer & Explanation Answer: B) innocent of

Explanation:

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Q:

Point out the error, if any, in the following program.

main()

{

int a = 10;

void f();

a = f();

printf ( "\n %d", a );

}

void f()

{

printf ( "\n Hi ");

}

Answer

In spite of defining the function f() as returning void, the program is trying to collect the value returned by f() in the variable a.

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