MCQs on Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry for NEET and JEE

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Questions
1 If one mole of ammonia and one mole of hydrogen are fused in a closed container to make ammonium chloride gas, what will happen?
A ∆H>∆u
B ∆H=∆u
C ∆H< ∆ u
D There is no relationship

Answer:∆H<∆u
2 Number of atom/cell unit of bcc is
A 1
B 2
C 4
D 8

Answer:2
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3 What is the coordination number of Al in the crystallized form of AlCl3?
A 6
B 8
C 10
D 4

Answer:6
4 Which statement is correct regarding Fullerene C60?
A All carbon atoms go through SP2 hybridization.
B One six-membered ring is fused only with another six-membered ring.
C It consists of 20 six-membered rings and 12 five-membered ring.
D A five-membered ring is fused with another 6-membered ring.

Answer:One six-membered ring is fused only with another six-membered ring.
5 Which one of these contains the lowest oxidation number of nitrogen?
A Nitric oxide
B Nitrogen dioxide
C Nitrous oxide
D Nitrogen trioxide

Answer:Nitrous oxide
6 Which one reduction with lithium aluminium hybrid creates a secondary amine?
A Acetamide
B Methyl cyanide
C Nitroethane
D Methyl isocyanide

Answer: Methyl isocyanide
7 The wavenumber of spectral line in the emission spectrum of hydrogen would be equal to times the Rydberg’s constant if the electron jumps from ____________
A n=10 to n=1
B n=3 to n=1
C n= 9 to n= 1
D n= 2 to n=1

Answer:n=3 to n=1
8 Which one reduces iron oxide in a blast furnace?
A Silica
B Carbon monoxide
C A hot blast of air
D Carbon

Answer:Carbon monoxide
9 Which one is manufactured using Caprolactam?
A Nylon-6, 6
B Terylene
C Nylon-6
D Teflon

Answer:Nylon-6
10 Which one decreases with dilution?
A Specific conductance
B Conductance
C Molar conductance
D Equivalent conductance

Answer:Specific conductance
11 The number water molecule(s) directly bonded to the metal centre CuSO45H2O is
A 1
B 2
C 3
D 4

Answer:4
12 The number of unidentate ligands in the complex ion is called
A EAN
B Coordination number
C Oxidation number
D Primary valency

Answer:Coordination number
13 If CH=CH-O-CH2-CH3 reacts with one mole of HI. Which one is formed?
A Ethanal
B Iodoethene
C Ethanol
D Ethane

Answer:Ethanal
14 Anisole can be made from methyl iodide on sodium phenate. The name of this reaction is
A Fittig’s reaction
B Wurtuz’s reaction
C Etard’s reaction
D Williamson’s reaction

Answer:Williamson’s reaction
15 Which one is the least acidic?
A P-nitrophenol
B o-cresol
C Phenol
D p-chlorophenol

Answer:o-cresol
16 The number of electrons in the valence cell of the central atom of a molecule is 8. Which one is the molecule?
A SCl2
B BeH2
C BCl3
D SF6

Answer: SCl2
17 Which one of these amino acids is basic in nature?
A Valine
B Leucine
C Arginine
D Tyrosine

Answer:Arginine
18 Nucleic acids are the polymers of ________
A Sugars
B Bases
C Nucleosides
D Nucleotides

Answer:Nucleotides
19 The complete hydrolysis of cellulose, forms
A D-ribose
B D-glucose
C L-glucose
D D-fructose

Answer: D-glucose
20 Which of these hormones release during stress and stimulate Glycogenolysis in the liver of human beings?
A Adrenaline
B Thyroxin
C Insulin
D Estradiol

Answer:Adrenaline

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