RRB NTPC Questions on Atoms & Molecules PDF
Download RRB NTPC Atoms & Molecules Questions PDF. Top 10 RRB NTPC questions based on asked questions in previous exam papers very important for the Railway NTPC exam.
Download RRB NTPC Questions on Atoms & Molecules PDF
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Question 1: Isomerism caused by the different arrangements of atoms or groups in space is called as
a) Structural isomerism
b) Metamerism
c) Tautomerism
d) Stereo isomerism
Question 2: ……………. are atoms having the same mass number but different atomic numbers
a) Isohyets
b) Isotopes
c) Isotherms
d) Isobars
Question 3: Atoms of different elements with different atomic numbers, having same mass number is known as _________.
a) Isobars
b) Isohalines
c) Isotopes
d) Ion
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Question 4: Atoms of the same element or of different elements can join together to form a/an
a) Molecule
b) Electron
c) Proton
d) Ion
Question 5: When atoms bond together chemically, ___________ are formed.
a) Elements
b) Molecules
c) Both Elements and Alloys
d) Alloys
Question 6: The average kinetic energy of the molecules of an ideal gas is directly proportional to
a) Velocity of Molecules
b) Mass of Molecules
c) Absolute temperature of the gas,
d) Temperature of environment
Question 7: Which of the following molecules is joined by a double covalent bond?
a) Cl2
b) O2
c) N2
d) He2
Question 8: The residual attractive or repulsive forces between molecules or atomic groups that do not arise from a covalent bond, or ionic bonds is called ……………
a) Neutral Bond
b) Non Polar Bond
c) Electro Valence bond
d) Van der Walls bond
Question 9: ……………..is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.
a) Diffusion
b) Osmosis
c) Active Transport
d) Passive Transport
Question 10: Aromatic hydrocarbons contain at least how many benzene rings in their molecules?
a) four
b) three
c) two
d) one
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Answers & Solutions:
1) Answer (D)
2) Answer (D)
3) Answer (A)
4) Answer (A)
5) Answer (B)
6) Answer (C)
7) Answer (B)
8) Answer (D)
9) Answer (C)
10) Answer (D)
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