Questions

Q:

Consider the following constituent gases of the atmosphere :

1. Argon

2. Neon

3. Helium

4.Ceirbon dioxide

Which one of the following is the correct ascending sequence of the above gases in terms of the volume percentage?

A) 1-3-2-4 B) 1-4-2-3
C) 4-2-3-1 D) 2-4-1-3
 
Answer & Explanation Answer: B) 1-4-2-3

Explanation:
Composition of Dry Air (Substance, % by volume)
Nitrogen, N2 78.08
Oxygen, O2
20.95
Argon, Ar 0.93
Carbon dioxide, CO2 0.033
Neon, Ne 0.0018
Helium, He 0.00052
Methane, CH4 0.0002
Krypton, Kr 0.00011
Dinitrogen oxide, N2O 0.00005
Hydrogen, H2 0.00005
Ozone, O3 0.000001
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Filed Under: Chemistry
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0 54545
Q:

Factors that may influence enzyme activity?

 

A) pH B) Substrate concentration
C) Temperature D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Filed Under: Chemistry
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0 54541
Q:

Jog Falls is situated on which river?

 

A) Sharavati B) Cauvery
C) Narmada D) Chambal
 
Answer & Explanation Answer: A) Sharavati

Explanation:
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Filed Under: Indian Geography
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1 54335
Q:

Who first imposed Jizya Tax in India?

A) Allaudin khilji B) Aurangzeb
C) Mohammad Bin Qasim D) Qutb-ud-din Aibak
 
Answer & Explanation Answer: D) Qutb-ud-din Aibak

Explanation:

In India, Islamic rulers Qutb-ud-din Aibak imposed jizya on non-Muslims first time which was called kharaj-o-jizya. Jizya was abolished by the Mughal ruler Akbar in the 16th century but was re-introduced by Aurangzeb in the 17th century.

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Filed Under: Indian History
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150 54314
Q:

Along the path of the vas deferens which glands add their secretions in the sperms?

 

I. Prostate

II. Seminal vesicles

III. Scrotum

 

A) Only I and III B) Only I and II
C) Only II and III   D) All I, II and III
 
Answer & Explanation Answer: B) Only I and II

Explanation:
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Filed Under: Biology
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1 54280
Q:

Group 8A of the periodic table contains the

 

A) least reactive metals B) most reactive nonmetals
C) most reactive metals D) least reactive nonmetals
 
Answer & Explanation Answer: D) least reactive nonmetals

Explanation:

Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo) are present group 8A.

 

They have fully filled orbitals and hence are most stable amongst all the elements in the periodic table and are considered as least reactive least reactive non-metals.

 

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1 54255
Q:

Elements having same atomic numbers but different mass number are called ______.

 

 

A) isotones B) Isotopes
C) isomopes D) isobar
 
Answer & Explanation Answer: B) Isotopes

Explanation:
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0 54253
Q:

If V/I is a constant, it is called:

 

A) Potential difference B) Current
C) Coulomb D) Resistance
 
Answer & Explanation Answer: D) Resistance

Explanation:
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Filed Under: Physics
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2 54098