Questions

Q:

Which characteristic is a property of molecular substances?

A) good heat conductivity B) high melting point
C) good heat conductivity D) low melting point
 
Answer & Explanation Answer: D) low melting point

Explanation:

The substances in which two or more atoms are attached together are called as molecular substances. 

 

Properties of molecular substances ::

 

1. Molecular substances are bonded with covalent bonds

2. Bad heat conductivity

3. Bad electrical conductivity

4. Have low melting points.

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Q:

The longitudinal valley lying between lesser Himalaya and the ____________ are known as Duns.

A) Himadri B) Himachal
C) Shiwaliks D) Tibet
 
Answer & Explanation Answer: C) Shiwaliks

Explanation:
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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Scot­free

A) To escape from captivity B) Be free of all responsibilities
C) To Get something unexpected D) Without suffering any punishment or injury
 
Answer & Explanation Answer: D) Without suffering any punishment or injury

Explanation:
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Q:

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best express the same sentence in Indirect/Direct speech.

Vicky said, "I clean my teeth daily."

A) Vicky said he cleans his teeth daily. B) Vicky says he cleans his teeth daily.
C) Vicky said that he cleaned his teeth daily. D) Vicky said that he used to clean his teeth daily.
 
Answer & Explanation Answer: C) Vicky said that he cleaned his teeth daily.

Explanation:
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Q:

Which molecule is nonpolar and has a symmetrical shape?

A) NH3 B) HCl
C) H2O D) CH4
 
Answer & Explanation Answer: D) CH4

Explanation:

Among the given options, CH4 is a non polar molecule with symmetrical tetrahedral shape.

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Q:

Glass is made of which material?

A) Calcium carbonate B) Sand
C) Silver Iodide D) Lime
 
Answer & Explanation Answer: B) Sand

Explanation:

Glass is made from heating of sand. To melt sand to make glass, the temperature needed is above 1800 deg celcius.

glass_is_made_of_which_material1562221721.jpg image

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Q:

A body of 4.0 kg is lying at rest. Under the action of a constant force, it gains a speed of 5 m/s. The work done by the force will be____.

A) 50J B) 30J
C) 20J D) 40J
 
Answer & Explanation Answer: A) 50J

Explanation:
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Q:

Transgenders can file sexual harassment case under which section of IPC?

A) Section 354A B) Section 366
C) Section 666A D) None of the above
 
Answer & Explanation Answer: A) Section 354A

Explanation:

Under IPC Section 354A, transgenders can file sexual harassment case.

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