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 Chemistry Questions

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Q:

What element behaves most like magnesium?

A) Sr B) S
C) Si D) Sn
 
Answer & Explanation Answer: A) Sr

Explanation:

We know that, elements in the same group of the periodic table have similar characteristics. Here magnesium and strontium are the same 2nd group elements and have same behavior. 

Therefore, strontium behaves same as magnesium. 

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5 2012
Q:

A feature of catabolic reactions is that they

A) occur only in mitochondria B) occur only during loss of body weight
C) involve release of energy D) involve consumption of energy
 
Answer & Explanation Answer: C) involve release of energy

Explanation:
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5 2006
Q:

Magnesium is a constituent metal of __________

A) Chlorophyll molecule B) DNA
C) Mitochondria D) Ribosomes
 
Answer & Explanation Answer: A) Chlorophyll molecule

Explanation:
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0 2002
Q:

Permanent hardness of water may be removed by the addition of

A) Alum B) Lime
C) Sodium Carbonate D) Potassium Permanganate
 
Answer & Explanation Answer: C) Sodium Carbonate

Explanation:

Permanent hardness of water may be removed by the addition of Sodium Carbonate.

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0 1995
Q:

The pH value of a sample of multiple-distilled water is

A) zero B) 14
C) very near to zero D) very near to seven
 
Answer & Explanation Answer: D) very near to seven

Explanation:

Water  is  neutral  and  has  a  pH value  of  7  and  because  here it  is multiple distilled water, it would be very near to seven

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Exam Prep: Bank Exams

3 1995
Q:

The mass number of an isotope of an element is 298. If its nucleus has 189 neutrons, what is its atomic number?

A) 298 B) 189
C) 109 D) 487
 
Answer & Explanation Answer: C) 109

Explanation:
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1 1991
Q:

Which among the following is used in making liquors, medicines and as a fuel in aircrafts?

A) Propyl alcohol B) Dimethyl alcohol
C) Ethyl alcohol D) Methyl alcohol
 
Answer & Explanation Answer: C) Ethyl alcohol

Explanation:
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1 1984
Q:

Which type of bond is found in sodium bromide?

A) Ionic B) Covalent
C) Polar covalent D) None of the above
 
Answer & Explanation Answer: A) Ionic

Explanation:
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2 1977