The solubility of NaI in water is ______.
- ✓184 g
- B92 g
- C95 g
- D36 g.
Answer: A.
View full solution →Question types
Solutions question types
129 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
129
Questions
8
Question groups
5
Question types
01
Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.
39 Q→02Fill in the blank
30 Q→03True-False
20 Q→04Assertion & Reason
10 Q→05[1 Mark Questions]
16 Q→06[2 Mark Questions]
4 Q→07[4 Mark Questions]
4 Q→08Match The Following.
6 Q→Sample Questions
Solutions questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The solubility of CaO in water is ______ process.
- ✓Exothermic
- Bendothermic
- CAdiabatic
- DIsothermic.
Answer: A.
View full solution →The solubility of $KNO _3$ in water is process.
- AExothermic
- ✓endothermic
- CIsothermic
- DAdiabatic.
Answer: B.
View full solution →The gas – filled in soft drinks in ______.
- A$O _2$
- B$N _2$
- ✓$CO _2$
- D$H _2$
Answer: C.
View full solution →The solubility of NaBr in H2O is ______.
- A36 g
- ✓95 g
- C184 g
- D92 g.
Answer: B.
View full solution →______ and _______ are in the form of solution to decide the physiological activity of human beings.
______ is an example of gas in the liquid.
Zinc dissolved in copper is an example of ______ solution.
Based on the amount of solute, the solution is classified into ________ types.
To qualify the solute in a solution, we can use the term ______.
Deliquescent substances do not change their physical state on exposure to air.
Hygroscopic substances do not change their physical state on exposure to air.
Mass percentage is dependent of temperature.
Aquatic animals live more in hot regions.
40 g of sodium chloride in 100 g of water at 25°C forms an unsaturated solution.
Assertion (A): Anhydrous calcium chloride is an example of a hygroscopic substance.
Reason (R): Anhydrous calcium chloride changes its physical state on exposure to air.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is wrong but (R) is correct
(d) (A) is correct but (R) is wrong
Reason (R): Anhydrous calcium chloride changes its physical state on exposure to air.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is wrong but (R) is correct
(d) (A) is correct but (R) is wrong
Assertion (A): When Blue vitriols are gently heated it turns colourless.
Reason (R): It loses five water molecules and becomes anhydrous compounds.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Reason (R): It loses five water molecules and becomes anhydrous compounds.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Assertion (A): Water act as a universal solvent.
Reason (R): Most of the substances are soluble in water.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Reason (R): Most of the substances are soluble in water.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Assertion (A): Aqueous copper sulphate is a binary solution.
Reason (R): Copper sulphate solution contains two components i.e., one solute-copper sulphate and one solvent-water.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Reason (R): Copper sulphate solution contains two components i.e., one solute-copper sulphate and one solvent-water.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Assertion (A): $CO _2$ gas is filled in soft drinks using the effect of pressure.
Reason (R): A decrease in pressure increases the solubility of a gas in a liquid.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
View full solution →Reason (R): A decrease in pressure increases the solubility of a gas in a liquid.
(a) Both (A) and (R) are correct
(b) Both (A) and (R) are wrong
(c) (A) is correct but (R) is wrong
(d) (A) is wrong but (R) is correct.
Give examples for deliquescent substances.
When is deliquescence is maximum?
What are the Deliquescent substances?
List out the examples for hygroscopic substances.
What are hygroscopic substances?
What happens when blue vitriol is heated? Explain.
Why bubbling occurs when water is boiled?
Where we use the phrase – “Like dissolves Like” and explain the meaning of the phrase?
Observe the diagram.
- Which is a concentrated solution and why?
- Which is dilute solution and why?
Find the concentration of a solution in terms of weight per cent if $20$ g of common salt is dissolved in $50$ g of water.
View full solution →Write a note on the type of solution based on the amount of solute present in a solution.
Distinguish between the saturated and unsaturated solution at a temperature of 25°C using the data given below (Note: Solubility of NaCl is 36 g).
- 16 g NaCl in 100 g water
- 36 g NaCl in 100 g water
From the table given below, furnish your points of inference.
| Substance | Solubility at 25°C |
| NaCl | 36 g |
| NaBr | 95 g |
| NaI | 184 |
| i. Epsom salt | (a) $ZnSO _4 \cdot 7 H _2 O$ |
| ii. Green Vitriol | (b) $MgSO _4 \cdot 7 H _2 O$ |
| iii. White Vitriol | (c) $SiO _2$ |
| iv. Silica gel | (d) $FeSO _4 \cdot 7 H _2 O$ |
| i. Solubility of $KNO _3$ | (a) decreases with increase in temperature |
| ii. The solubility of CaO | (b) increases with increase in pressure |
| iii. The solubility of oxygen | (c) increases with increase in temperature |
| iv. Solubility of $CO _2$ | (d) more in cold water |
| i. Solubility of $KNO _3$ | (a) decreases with increase in temperature |
| ii. The solubility of CaO | (b) increases with increase in pressure |
| iii. The solubility of oxygen | (c) increases with increase in temperature |
| iv. Solubility of $CO _2$ | (d) more in cold water |
| i. Solubility of $KNO_3$ | (a) decreases with increase in temperature |
| ii. The solubility of CaO | (b) increases with increase in pressure |
| iii. The solubility of oxygen | (c) increases with increase in temperature |
| iv. Solubility of $CO _2$ | (d) more in cold water |
| i. Saturated solution | (a) Sulphur in acetone |
| ii. Unsaturated solution | (b) 56 g NaCl in water |
| iii. Supersaturated solution | (c) 10 g of NaCl in water |
| iv. Non-aqueous solution | (d) 36 g of NaCl in water |
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