Q. No.Which of the following compounds are readily soluble in water?
a.
b.
c.
d.
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
When zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with which of the following ion(s)?
a. ions
b. ions
c. ions
d. ions
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Choose the correct statements from the following.
| a | Beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal |
| b. | Beryllium sulphate is readily soluble in water as the greater hydration enthalpy of Be2+ overcomes the lattice enthalpy factor |
| c | Beryllium exhibits coordination number more than four |
| d | Beryllium oxide is purely acidic in nature |
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Match the elements given in Column I with the properties mentioned in Column II.
|
Column I |
Column II |
|
A. Li |
1. Insoluble sulphate |
|
B. Ca |
2. Strongest monoacidic base |
|
C. Na |
3. Most negative value among alkali metals |
|
D. Ba |
4. Insoluble oxalate |
Codes
| Options: | A | B | C | D |
| 1. | 3 | 2 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 3 | 4 | 2 | 1 |
Match the elements given in Column I with the color they impart to the flame given in Column II.
|
Column I |
Column II |
|
A. Cs |
1. Apple green |
|
B. Sr |
2. Blue |
|
C. Ba |
3. Brick red |
|
D. Ca |
4. Crimson red |
Codes
| Options: | A | B | C | D |
| 1. | 1 | 4 | 2 | 3 |
| 2. | 2 | 4 | 1 | 3 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Given below are two statements:
| Assertion (A): | The carbonate of lithium decomposes easily on heating to form lithium oxide and CO2. |
| Reason (R): | Lithium being very small in size polarises large carbonate ions leading to the formation of more stable Li2O and CO2. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Given below are two statements:
| Assertion (A): | Beryllium carbonate is kept in the atmosphere of carbon dioxide. |
| Reason (R): | Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
The alkali metals have low melting point. Which of the following alkali metal is expected to melt if the room temperature rises to ?
1. Na
2. K
3. Rb
4. Cs
The reducing power of a metal depends on various factors. Suggest the factor which makes Li, the strongest reducing agent in aqueous solution.
1. Sublimation enthalpy
2. Ionisation enthalpy
3. Hydration enthalpy
4. Electron-gain enthalpy
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