11th Standard Syllabus & Materials
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Published on: 10/11/2020
11th Standard Chemistry English Medium Free Online Test 1 Mark Questions 2020 - Part Eight
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.
Assertion: 
is 3– carbethoxy -2- butenoicacid
Reason: The principal functional group gets lowest number followed by double bond (or) triple bond.
both the assertion and reason are true and the reason is the correct explanation of assertion
both assertion and reason are true and the reason is not the correct explanation of assertion
assertion is true but reason is false
both the assertion and reason are false
2.
Which one of the following names does not fit a real name?
3 – Methyl –3–hexanone
4–Methyl –3– hexanone
3– Methyl –3– hexanol
2– Methyl cyclo hexanone
3.
Which of these represents the correct order of their increasing bond order _________
C2 < C2 2- < O2 2- < O2
C 2 2- < C2 + < O2 < O2 2-
O2 2- < O2 < C2 2- < C 2+
O2 2- < C2 + < O2 < C2 2-
4.
Which one of the following is used in fire extinguishers?
Washing soda
Soda ash
Baking soda
Caustic soda
5.
Which of the following is used as a coolant in fast breeder nuclear reactor?
Liquid ammonia
Liquid helium
Liquid Na metal
Solid CO2
6.
Which one of the following is more basic?
Ca(OH)2
Mg(OH)2
NaOH
AI(OH)3
7.
The molecules of a gas A travel four times faster than the molecules of gas B at same temperature. The ratio of molecular weight MA / MB is _________.
1/16
4
1/4
16
8.
The value of critical temperature of carbon dioxide is _________.
273 K
303.98 K
373 K
-80o C
9.
The standard atmospheric pressure at sea level at 0oC is equal to _____________.
1 mm Hg
76 mm Hg
760 mm Hg
680 mm Hg
10.
Which of the following is a diatomic gas in nature?
Oxygen
Ozone
Helium
Radon
11.
At constant temperature, the pressure of the gas is reduced to one-third, the volume ________.
reduce to one-third
increases by three times
remaining the same
cannot be predicted
12.
Which of the following is insoluble in water?
LiF
NaCI
KBr
NaBr
13.
Which of the following is named as perhydrol and used as an antiseptic?
D2O
H2O2
NaH
B2H6
14.
Consider the following statements regarding Rutherford's \(\alpha\)-ray scattering experiment.
i. Most of the \(\alpha\)-particles were deflected through a small angle.
ii. Some of \(\alpha\)-particles passed through the foil.
iii. Very few \(\alpha\)-particles were reflected back by 180o.
Which of the above statements is/are not correct.
i and ii
ii and iii
i and iii
i, ii and iii
15.
When solid melts there is ____________
an increase of entropy
a decrease in entropy
an increase in free energy
an increase of heat of fusion
16.
The density of neon will be highest at: ______.
STP
0°C, 2 atm
273°C, 1 atm
273°C, 2 atm
17.
The element which does not contain a neutron is _____________
hydrogen
helium
chlorine
none of the above
18.
The liquefaction behaviour of temporary gases like CO2 approaches that of N2, O2 (permanent gases) as we go _______
below critical temperature
above critical temperature
below absolute zero
above absolute zero
19.
Vanderwaal's constant a and b are related with ______________ respectively
attractive force and volume of molecules.
repulsive force and volume of molecules
attractive force and bond energy of molecules.
shape and repulsive force of molecules
20.
Which mixture of gases at room temperature does not obey Dalton's law of partial pressure?
NO2 and O2
SO2 and SO3
CO and CO2
NH3 and HCI
21.
What is the dominant intermolecular force or bond that must be overcome in converting liquid methanol to a gas?
London dispersion force
Hydrogen bonding
Dipole-dipole interaction
Covalent bonds
22.
Temperature at which gas behave ideally over a wide range of pressure is called as ____________
Inversion temperature
Boyle's temperature
Critical temperature
None of these
23.
The mathematical expression V\(\infty \) n relates to _____________
Boyle's law
Charles law
Avogadro's hypothesis
Gay Lussac's law
24.
The instrument used for measuring atmospheric pressure is ________________
Beckmann thermometer
Galvanometer
Barometer
all the above
1.
(a)
both the assertion and reason are true and the reason is the correct explanation of assertion
2.
(a)
3 – Methyl –3–hexanone
3.
(d)
O2 2- < C2 + < O2 < C2 2-
4.
(c)
Baking soda
5.
(c)
Liquid Na metal
6.
(c)
NaOH
7.
(a)
1/16
8.
(b)
303.98 K
9.
(c)
760 mm Hg
10.
(a)
Oxygen
11.
(b)
increases by three times
12.
(a)
LiF
13.
(b)
H2O2
14.
(a)
i and ii
15.
(a)
an increase of entropy
16.
(b)
0°C, 2 atm
17.
(a)
hydrogen
18.
(b)
above critical temperature
19.
(a)
attractive force and volume of molecules.
20.
(d)
NH3 and HCI
21.
(b)
Hydrogen bonding
22.
(b)
Boyle's temperature
23.
(c)
Avogadro's hypothesis
24.
(c)
Barometer
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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