Questions

Q:

Which is a pair of allotropes?

A) carbon-16 and carbon-12 B) diamond and graphite
C) carbon dioxide and graphite D) diamond and carbon dioxide
 
Answer & Explanation Answer: B) diamond and graphite

Explanation:

Allotropes are the different physical forms of an element. Here in the given options, diamond and graphite are the pair of allotropes of carbon.

 

Some more examples are Molecular oxygen and ozone are pair of allotropes, Black and red phosphorous are also pairs of allotropes.

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Q:

The water molecule has a dipole with the negative portion

A) localized on one of the hydrogens B) localized between the hydrogen atoms
C) pointing toward the oxygen atom D) pointing from the oxygen through the hydrogen atoms
 
Answer & Explanation Answer: C) pointing toward the oxygen atom

Explanation:

The water molecule has a dipole with the negative portion pointing toward the oxygen atom.

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Q:

Who has been appointed as the new Executive Director (ED) of RBI in place of US Paliwal ?

A) Anjali Singh B) Manish Tomar
C) Susheela Singh D) Surekha Marandi
 
Answer & Explanation Answer: D) Surekha Marandi

Explanation:

Surekha Marandi has been appointed as the new Executive Director (ED) of Reserve Bank of India (RBI). She succeeded U S Paliwal, who retired on December 31, 2016.

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Q:

The first lady to receive the Dadasaheb Phalke Award was

A) Nargis Dutt B) Savitri Ganesh
C) Devika Rani Roerich D) Dina Pathak
 
Answer & Explanation Answer: C) Devika Rani Roerich

Explanation:
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Q:

The atoms of the elements having same mass number but different atomic number are called

A) Isotopes B) Isobars
C) Isotones D) Isomers
 
Answer & Explanation Answer: B) Isobars

Explanation:
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Q:

What treat was invented by 11-year-old Frank Epperson in 1905?

A) Popsicle B) Banana split
C) Cotton candy D) Cracker Jacks
 
Answer & Explanation Answer: A) Popsicle

Explanation:
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Q:

Two trains cross each other in _____ time ? 

17499494_1251651558275279_9192886760450524065_n1500008429.png image

A) 145 sec B) 124 sec
C) 158 sec D) 162 sec
 
Answer & Explanation Answer: D) 162 sec

Explanation:

Given two trains of length = 180 mts + 180 mts 

The distance is = Length of trains = 360 mts 

Speed = 58 - 50 = 8 kmph x 5/18 m/s

Then, Time = dis/speed = (360x18) / (8x5) = 162 sec.

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Q:

Can ROM be used as stack?

Answer

ROM cannot be used as stack because it is not possible to write to ROM.

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Subject: Hardware

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