100% FREE ACCESS11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 10/11/2020
11th Standard Chemistry Alkali and Alkaline Earth Metals English Medium Free Online Test One Mark Questions 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.
Lime water turning milky is due to the formation of ______
calcium carbonate
calcium hydroxide
calcium hydroxide
calcium chloride
2.
Ca(OH)2 is _______
gypsum
milk of lime
slaked lime
lime water
3.
Compounds of alkaline earth metals are less soluble in water than the corresponding alkali metals salts due to ________
their increased covalent character
high lattice energy
their high ionization energy
none of the above
4.
What is the trend of formation of ionic compound in alkaline earth metals?
Increases down the group
Decreases down the group
Decreases across the period
Remains same in the periodic table
5.
_________ is the cofactor of all enzymes that utilize ATP in phosphate transfer and energy release.
Be
Mg
Ca
Ba
6.
_______ is unstable in air and is kept in CO2 atmosphere to avoid decomposition.
BeCO3
MgCO3
CaCO3
BaCO3
7.
Match the list I with List II and select the correct answer using. the code given below the lists.
| List I | List II | ||
|---|---|---|---|
| A | Ba | 1 | Crimson red |
| B | Ca | 2 | Lilac |
| C | Sr | 3 | Apple green |
| D | K | 4 | Brick red |
| A | B | C | D |
| 1 | 3 | 2 | 4 |
| A | B | C | D |
| 4 | 3 | 1 | 2 |
| A | B | C | D |
| 3 | 4 | 1 | 2 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
8.
Find out the correct statement with respect to alkali metals.
They react with oxygen to give mainly the oxide MO2
They react with halogen to give halides MX
Their nitrates decompose on heating to give NO2 and O2
Their carbonates decompose on heating to give CO2 and MO
9.
The metallic lustre exhibited by sodium is due to ________
Excitation of free protons
Existence of body centered cubic lattice
Diffusion of Na+ ions.
Vibration of loose electrons
10.
Which among the following is the strongest reducing agent?
Na
K
Ac
Mg
11.
Spodumene is the silicate mineral of _____
lithium
sodium
cesium
francium
12.
Match the flame colours of the alkali and alkaline earth metal salts in the bunsen burner
| (P) Sodium | (1) Brick red |
| (q) Calcium | (2) Yellow |
| (r) Barium | (3) Violet |
| (s) Strontium | (4) Apple green |
| (t) Cesium | (5) Crimsonred |
| (u) Potassium | (6) Blue |
p - 2, q - 1, r - 4, s - 5, t - 6, u - 3
p - 1, q - 2, r - 4, s - 5, t - 6, u - 3
p - 4, q - 1, r - 2, s - 3, t - 5, u - 6
p - 6, q - 1, r - 2, s - 3, t - 5, u - 4
13.
The product obtained as a result of a reaction of nitrogen with CaC2 is ___________
Ca(CN)3
CaN2
CaCN2
Ca3N2
14.
In case of alkali metal halides, the ionic character increases in the order ____________
MF < MCI < MBr < MI
MI < MBr < MCI < MF
MI < MBr
none of these
15.
Find the wrong statement
sodium metal is used in organic qualitative analysis
sodium carbonate is soluble in water and it is used in inorganic qualitative analysis
potassium carbonate can be prepared by solvay process
potassium bicarbonate is acidic salt
16.
17.
For alkali metals, which one of the following trends is incorrect ?
Hydration energy: Li > Na > K > Rb
Ionisation energy: Li > Na > K > Rb
Density: Li < Na < K < Rb
Atomic size: Li < Na < K < Rb
18.
Assertion : Alkaline earth metals are harder than alkali metals
Reason : Atomic radii of alkaline earth metals are smaller than corresponding alkali metals "in the same periods of periodic table
Codes:
a) both assertion and reason are true and reason is the correct explanation of assertion
b) both assertion and reason are true but reason is not the correct explanation of assertion
c) assertion is true but reason is false
d) both assertion and reason are false
Both assertion and reason are true and reason is the correct explanation for assertion.
Both assertion and reason are true but reason is not the correct explanation for assertion
Assertion is true but reason is false
Both assertion and reason are false
19.
Assertion : Lithium is in diagonal relationship with magnesium
Reason : Li+ has same size as Mg2
Codes:
(a) Both assertion and reason are true and reason is the correct explanation for assertion
(b) Both assertion and reason are true but reason is not the correct explanation for assertion
(c) Assertion is true but reason are false
(d) Both assertion and reason are false.
Both assertion and reason are true and reason is the correct explanation for assertion.
Both assertion and reason are true but reason is not the correct explanation for assertion
Assertion is true but reason are false
Both assertion and reason are false.
20.
Assertion : BeSO4 is soluble in water while BaSO4 is not
Reason : Hydration energy decreases down the group from Be to Ba and lattice energy remains almost constant.
(a) both assertion and reason are true and reason is the correct explanation of assertion
(b) both assertion and reason are true but reason is not the correct explanation of assertion
(c) both assertion and reason are false.
(d) Both assertion and reason are false
both assertion and reason are true and reason is the correct explanation of assertion
both assertion and reason are true but reason is not the correct explanation of assertion
assertion is true but reason is false
both assertion and reason are false.
1.
(a)
calcium carbonate
2.
(c)
slaked lime
3.
(a)
their increased covalent character
4.
(a)
Increases down the group
5.
(b)
Mg
6.
(a)
BeCO3
7.
(c)
| A | B | C | D |
| 3 | 4 | 1 | 2 |
8.
(b)
They react with halogen to give halides MX
9.
(d)
Vibration of loose electrons
10.
(b)
K
11.
(a)
lithium
12.
(a)
p - 2, q - 1, r - 4, s - 5, t - 6, u - 3
13.
(c)
CaCN2
14.
(b)
MI < MBr < MCI < MF
15.
(c)
potassium carbonate can be prepared by solvay process
16.
(c)
17.
(c)
Density: Li < Na < K < Rb
18.
b) both assertion and reason are true but reason is not the correct explanation of assertion
19.
(a) Both assertion and reason are true and reason is the correct explanation for assertion
20.
(a) both assertion and reason are true and reason is the correct explanation of assertion
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
Tamilnadu Stateboard 11th Standard Subjects
Maths
Commerce
Economics
Biology
Business Maths and Statistics
Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
Computer Science
Accountancy
Computer Applications
History
Computer Technology
Commerce
Computer Applications
Computer Technology
Tamil
English
French
Tamilnadu Stateboard Standards
