Questions

Q:

Atoms of the same element can differ in

A) Atomic number B) Atomic mass
C) electrons D) None of the above
 
Answer & Explanation Answer: B) Atomic mass

Explanation:

Atoms of the same element can have same atomic number and number of electrons since, the atomic number is the number of protons and the number of protons and eectrons are the same in an element.

 

Hence, the atoms of the same element may differ in their atomic mass since it depends on the number of neutrons it holds and such atoms are called isotopes.

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Q:

What is the natural source of Oxalic acid?

A) Tomato B) Sour milk
C) Ant sting D) Tamarind
 
Answer & Explanation Answer: A) Tomato

Explanation:
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Q:

Improve the bracketed part of the sentence We (should had) the confidence that we will surely succeed one day.

A) could have B) had to have
C) must have D) no improvement
 
Answer & Explanation Answer: C) must have

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:

In 1236 Sultan Iltutmish’s daughter, __________, became Sultan.

A) Rehana B) Rukhsana
C) Rashida D) Raziyya
 
Answer & Explanation Answer: D) Raziyya

Explanation:
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Q:

 In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.

 

A) Surgent B) Sergant
C) Sergeant D) Sergent
 
Answer & Explanation Answer: C) Sergeant

Explanation:
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Q:

What are amino acids made of?

A) Carbon B) Nitrogen
C) Hydrogen & Oxygen D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The carbon, oxygen, hydrogen and nitrogen are the key elements in aminoacids as all aminoacids contain amine (NH2) and carboxyl (COOH) as functional groups and R group for every specific aminoacid.

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Q:

Which of the following is known as thinnest layer of the earth?

A) Core B) Mantle
C) Crust D) None of the above
 
Answer & Explanation Answer: C) Crust

Explanation:

The thinnest layer is crust. It is about 100km. Where as mantle ranges upto 2900 km and the inner most core ranges upto 6300km.

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