11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 03/05/2019
Hydrogen one mark questions
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.
___________ is an example of intra molecular hydrogen bonding.
salicylaldehyde
hydrogen fluoride
para nitro phenol
both a and c
2.
A example of covalent hydride is ____________
CaH2
CH4
TiH
all the above
3.
LiH is an example of _________ hydride.
ionic
saline
covalent
both a and b
4.
H2O2 is a ________ acid.
monobasic
dibasic
tribasic
none
5.
H2O2 acts a ______ agent.
oxidizing
reducing
both reducing and oxidizing
neither reducing nor oxidizing
6.
Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH, the correct order of increasing ionic character is ______________
LiH > NaH > CsH > KH > RbH
LiH
RbH > CsH > NaH > KH > LiH
NaH> CsH > RbH > LiH > KH
7.
Hydrogen peroxide was discovered by _______
Chadwick
J.J Thomson
Urey
J.L. Thenard
8.
The maximum density of water is observed at ___________
0oC
4oC
11.6oC
273oC
9.
The velocity of neutrons in nuclear reactor is slowed down by _____________
H2O
D2O
Zinc rods
Copper rods
10.
Heavy water is __________
De-mineralized water
De-ionized water
ordinary water containing dissolved salts of heavy metals.
The compound of heavier isotope of hydrogen with oxygen.
11.
Presence of which cation makes the water hard in nature?
Ca & Mg
Na & Mg
Ca & Na
Mg & F
12.
Name the anions responsible for permanent hardness of water ____________
sulphate
chloride
nitrate
both (a) and (b)
13.
The chemical that is added to water in order to remove temporary hardness is ____________
Ca(OH)2
CaCO3
HCl
CaSO4
14.
Hardness of water cannot be removed by ______________
treating with washing soda
adding calgon
boiling
addition of chlorine
15.
The H- O- H angle in water molecule is about _____________
90°
104.5°
109°28'
180°
16.
Match the list I with List II and select the correct answer using. the code given below the lists.
| List I | List II | ||
| A | H2O2 | 1 | SiH4 |
| B | D2O | 2 | PdH |
| C | Metallic hydride | 3 | Bleach |
| D | Molecular hydride | 4 | Study of reaction mechanism |
| A | B | C | D |
| 1 | 3 | 2 | 4 |
| A | B | C | D |
| 4 | 3 | 1 | 2 |
| A | B | C | D |
| 3 | 4 | 2 | 1 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
17.
___________ is extensively used as a moderator in nuclear reactors.
H2O
H2O2
D2O
D2O2
18.
FeSO4 contains _________ molecules of water of hydration.
5
7
10
12
19.
Hardness of water is due to ___________ of calcium and magnesium.
bicarbonates
sulphates
chlorides
all the above
20.
The structure of water molecule is __________
bent
tetrahedral
distorted octahedral
trigonal bi pyramidal
21.
Which of the following compounds is used for water softening?
Ca3(PO4)2
Na3PO4
NaAlSiO4
Na2HPO4
22.
Match the list I with List II and select the correct answer using. the code given below the lists.
| List I | List II | ||
| A | Calcium hydrogen carbonate | 1 | Permanent hardness |
| B | Calcium chloride | 2 | Chelating |
| C | Sodium aluminium silicate | 3 | Temporary hardness |
| D | EDTA | 4 | Ion exchange method |
| A | B | C | D |
| 1 | 3 | 2 | 4 |
| A | B | C | D |
| 4 | 3 | 1 | 2 |
| A | B | C | D |
| 3 | 1 | 4 | 2 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
23.
Consider the following statements
1. Hard water forms scum with soap.
2. Hard water lathers easily with soap
3. Hard water is unsuitable for laundry and boilers
Which of the following statement(s) given above is are correct?
1 & 3
only 1
2 & 3
only 2
24.
Consider the following statements
1. Water has high dielectric constant.
2. Water has strong intra molecular hydrogen bonding
3. Water is an Universal solvent
Which of the following statement(s) given above is are not correct
1 & 3
only 1
2 & 3
only 2
25.
Which properties of hydrogen are responsible for moderation of the climate and body temperature of living beings?
High heat of vaporisation
High heat capacity
Both (a) and (b)
None of these
26.
In which of the following compounds does hydrogen has an oxidation state of -1?
CH4
NH3
HCl
CaH2
27.
Which among of the following reaction produces hydrogen?
Na2O2 + HCl
BaO2 + HCl
K2S2O8 + H2O
Zn + HCl
28.
Hydrogen acts as a reducing agent and thus resembles ______________
halogens
chalcogens
inert gases
alkali metals
29.
Hydrogen accepts an electron to attain the inert gas configuration. In this way it resembles __________
chalcogens
halogens
transition metals
alkali metals
30.
The ionisation energy of hydrogen is higher than alkali metals. Pick out the correct reason for the above statement.
Because of smaller size of H.
Presence of 1e- in outermost shell
Presence of one proton in its nucleus
Absence of neutrons.
31.
___________ is considered as the potential alternative fuel of the future.
hydrogen
gasoline
biodiesel
propane
32.
Ortho and para hydrogen differ in _____________
proton spin
electron spin
nuclear charge
both b and c
33.
Which pair are not hydrogen isotopes?
Ortho and para hydrogen
Protium and deuterium
Deuterium and tritium
Tritium and protium
34.
Hydrogen burns in air with a - flame.
light bluish
yellow
green
none of these
35.
Hydrogen can be obtained from water by reaction with _____________
metal oxides
non metal oxides
metals
metal hydrides
36.
Hydrogen bomb is based on the principle of ____________
fission
fusion
both a and b
neither a nor b
37.
\({ CO }_{ (g) }+{ { H }_{ 2 }O }_{ (g) }\ \overset { 400C }{ \underset { X }{ \longrightarrow } } { CO }_{ 2(g) }+{ H }_{ 2(g) }\ \)'X' is_____________
Nickel
Iron
Iron oxide
Vanadium penta oxide
38.
The conversion of atomic hydrogen to dihydrogen is a __________ change.
endothermic
exothermic
photochemical
nuclear
39.
Which among the following statement/s given below is/ are incorrect regarding hydrogen?
1. It is diatomic in nature
2. Has only one electron in the outermost shell
3. Very good oxidizing agent
4. Does not form hydrides easily
1,2 & 3
only 4
only 3
only 2
40.
Match the list I with list II and select the correct answer using the code given below
| List I | List II | ||
| A | Protium | 1 | Radioactive |
| B | Tritium | 2 | Aligned nuclear spins |
| C | Ortho hydrogen | 3 | Opposed nuclear spins |
| D | Para hydrogen | 4 | No neutron |
| A | B | C | D |
| 1 | 3 | 2 | 4 |
| A | B | C | D |
| 4 | 1 | 2 | 3 |
| A | B | C | D |
| 3 | 1 | 4 | 2 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
41.
Hydrogen is used in _________
hydrogenation of oils
fuel cells
gas bags for air ships
all the above
42.
___________ torches is/are used in cutting and welding of a steel.
Oxy acetylene
Oxy hydrogen
both a and b
neither a nor b
43.
Ammonia is manufactured by __________ process.
Contact
Bergius
Haber's
none of the above
44.
The half life period of Tritium is ___________
12.33 secs
12.33 mins
12.33 hrs
12.33 years
45.
The radioactive isotope used in illumination of wrist watches instead of Radium is ___________
1T3
1D2
10Ne21
2He3
46.
The radioactive isotope of hydrogen is __________
protium
deuterium
tritium
nascent hydrogen
47.
Deuterium consists of _____________
one electron, two proton, three neutron
one electron, one proton, one neutron
two electron, one proton, one neutron
three electron, two proton, one neutron
48.
_____________ is known as heavy hydrogen.
protium
deuterium
tritium
both a and b
49.
The number of neutrons in hydrogen atom is ___________.
three
two
one
zero
50.
The most abundant element in the universe is _________.
aluminium
mica
dihydrogen
nitrogen
1.
(a)
salicylaldehyde
2.
(b)
CH4
3.
(d)
both a and b
4.
(b)
dibasic
5.
(c)
both reducing and oxidizing
6.
(b)
LiH
7.
(d)
J.L. Thenard
8.
(b)
4oC
9.
(b)
D2O
10.
(d)
The compound of heavier isotope of hydrogen with oxygen.
11.
(a)
Ca & Mg
12.
(d)
both (a) and (b)
13.
(a)
Ca(OH)2
14.
(d)
addition of chlorine
15.
(b)
104.5°
16.
(c)
| A | B | C | D |
| 3 | 4 | 2 | 1 |
17.
(c)
D2O
18.
(b)
7
19.
(d)
all the above
20.
(a)
bent
21.
(c)
NaAlSiO4
22.
(c)
| A | B | C | D |
| 3 | 1 | 4 | 2 |
23.
(a)
1 & 3
24.
(d)
only 2
25.
(c)
Both (a) and (b)
26.
(d)
CaH2
27.
(d)
Zn + HCl
28.
(d)
alkali metals
29.
(b)
halogens
30.
(a)
Because of smaller size of H.
31.
(a)
hydrogen
32.
(a)
proton spin
33.
(a)
Ortho and para hydrogen
34.
(b)
yellow
35.
(c)
metals
36.
(c)
both a and b
37.
(c)
Iron oxide
38.
(b)
exothermic
39.
(c)
only 3
40.
(b)
| A | B | C | D |
| 4 | 1 | 2 | 3 |
41.
(d)
all the above
42.
(c)
both a and b
43.
(c)
Haber's
44.
(d)
12.33 years
45.
(a)
1T3
46.
(c)
tritium
47.
(b)
one electron, one proton, one neutron
48.
(b)
deuterium
49.
(d)
zero
50.
(c)
dihydrogen
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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