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Free download in PDF Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER and other competitive exams. These short solved questions or quizzes are provided by Gkseries./p>
(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
(2)
Number of atom/cell unit of bcc is
(3)
What is the coordination number of Al in the crystallized form of AlCl3?
(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
(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
(8)
Which one reduces iron oxide in a blast furnace?
[A]
Silica
[B]
Carbon monoxide
[C]
A hot blast of air
[D]
Carbon
(9)
Which one is manufactured using Caprolactam?
[A]
Nylon-6, 6
[B]
Terylene
[C]
Nylon-6
[D]
Teflon
(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
(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
(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
(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
(17)
Which one of these amino acids is basic in nature?
[A]
Valine
[B]
Leucine
[C]
Arginine
[D]
Tyrosine
(18)
Nucleic acids are the polymers of ________
[A]
Sugars
[B]
Bases
[C]
Nucleosides
[D]
Nucleotides
(19)
The complete hydrolysis of cellulose, forms
[A]
D-ribose
[B]
D-glucose
[C]
L-glucose
[D]
D-fructose
(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
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