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Published on: 10/11/2020
11th Standard Chemistry Hydrogen English Medium Free Online Test One Mark Questions with Answer Key 2020 - 2021
Download Tamil Nadu 11th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Chemistry Test
1.
Statement-I: Hydrogen can be used as a clean burning fuel.
Statement-II: Hydrogen on combustion give only water as end product and it is free from pollutants.
Statements-I and II are correct and Statement-II is the correct explanation of statement-I.
Statements-land II are correct but Statement-II is not the correct explanation of statement-I.
Statement-I is correct but Statement-II is wrong.
Statement-l is wrong but Statement-II is correct.
2.
Statement-I: Heavy water has been widely used as moderator in nuclear reactors.
Statement-II: Heavy water can lower the energies of fast moving neutrons.
Statements-I and II are correct and Statement-II is the correct explanation of statement-I.
Statements-land II are correct but Statement-II is not the correct explanation of statement-I.
Statement-I is correct but Statement-II is wrong.
Statement-I is wrong but Statement-II is correct.
3.
Statement-I: Hydrogen is placed at the top of the group which is in-line with the latest periodic table.
Statement-II: Hydrogen has a tendency to lose its electron to form H+, thus showing electropositive character like alkali metals. On the other hand, hydrogen has a tendency to gain an electron to yield H-, thus showing an electronegative character like halogens.
Statements-I and II are correct and Statement-Il is the correct explanation of statement-I.
Statements-land II are correct but Statement-II is not the correct explanation of statement- I.
Statement-I is correct but Statement-II is wrong.
Statement-I is wrong but Statement-II is correct.
4.
The most abundant element in the universe is ___________
Carbon
Nitrogen
Silicon
Hydrogen
5.
Which metal does not liberate H2 gas from dilute aqueous hydrochloric acid at 298 K?
Mg
Zn
Al
Cu
6.
Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect?
Its tendency to lose an electron to form a cation
Its tendency to gain an electron to attain stable electronic configuration.
Its low negative electron gain enthalpy value
Its small size
7.
Which of the following is named as perhydrol and used as an antiseptic?
D2O
H2O2
NaH
B2H6
8.
Consider the following statements.
(i) In ice, each oxygen atom is surrounded by hydrogen atoms tetrahedrally to four water molecules.
(ii) Acetic acid exists as dimer due to intra molecular hydrogen bonding.
(iii) Strong hydrogen bonds lead to an increase in the melting and boiling points.
Which of the above statements is/are not correct?
(ii) only
(i) and (iii)
(i), (ii) and (iii)
(i) only
9.
Which of the following is the correct order of stability of bonds?
Hydrogen bond < Covalent bond < Vanderwaals bond
Vanderwaals bond < Hydrogen bond < Covalent bond
Vanderwaals bond> Hydrogen bond> Covalent bond
Covalent bond < Hydrogen bond < Vanderwaals bond
10.
Which one of the following is not a covalent hydride?
Ammonia
Methane
Lithium hydride
water
11.
Which one of the following is prepared in industry by the auto-oxidation of 2-alkylanthraquional?
Heavy water
Deuterium
Hydrogen peroxide
Tritium
12.
Which type of hydrides are generally non-stoichiometric in nature?
Metallic hydride
Covalent hydrides
Ionic hydride
Saline hydride
13.
Which one of the following is used as water softener?
Zeolites
lime
washing soda
bleaching powder
14.
Consider the following statements.
(i) Silver, Gold, Mercury and Platinum do not have any effect on water.
(ii) Carbon, Sulphur and Phosphorous do not react with water.
(iii) Beryllium reacts with water less violently.
Which of the following statements is/are not correct?
(i) only
(ii) and (iii)
(iii) only
(ii) only
15.
Water does not react with ____________
Sodium
Magnesium
Beryllium
Calcium
16.
At the temperature conditions of the earth (300K) the OPR of H2O is _____________
2.5
3
1
zero
17.
Which of the following is used for cutting and welding?
Atomic hydrogen and oxy hydrogen torches
Liquid hydrogen
Calcium hydride
Sodium boro hydride
18.
Which of the following is used as desiccants to remove moisture from organic solvents?
Calcium hydride
LiAIH4
Sodium boro hydride
Sodium hydride
19.
Which one of the following is manufactured in Haber's process?
SO3
NH3
N2
H2
20.
Water gas is _____.
H2O(g)
CO + H2O
CO + H2
CO + N2
1.
(a)
Statements-I and II are correct and Statement-II is the correct explanation of statement-I.
2.
(a)
Statements-I and II are correct and Statement-II is the correct explanation of statement-I.
3.
(a)
Statements-I and II are correct and Statement-Il is the correct explanation of statement-I.
4.
(d)
Hydrogen
5.
(d)
Cu
6.
(b)
Its tendency to gain an electron to attain stable electronic configuration.
7.
(b)
H2O2
8.
(a)
(ii) only
9.
(b)
Vanderwaals bond < Hydrogen bond < Covalent bond
10.
(c)
Lithium hydride
11.
(c)
Hydrogen peroxide
12.
(a)
Metallic hydride
13.
(a)
Zeolites
14.
(c)
(iii) only
15.
(c)
Beryllium
16.
(b)
3
17.
(a)
Atomic hydrogen and oxy hydrogen torches
18.
(a)
Calcium hydride
19.
(b)
NH3
20.
(c)
CO + H2
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