MCQOPTIONS

Explore topic-wise MCQs in Chemistry.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.	Which of the following compound releases heat when dissolved in water?
A.	Barium chloride
B.	Ammonium chloride
C.	Lead chloride
D.	Calcium chloride
Answer» E.

2.	What characteristic of water accounts for its unique properties as a solvent?
A.	Flexible
B.	Cohesive
C.	Polar
D.	Low viscosity
Answer» D. Low viscosity

3.	What is the molar solubility product for V3(PO4)5 in terms of KSP?
A.	S = (K<sub>SP</sub>/84375)<sup>1/8</sup>
B.	S = K<sub>SP</sub><sup>1/8</sup>
C.	S = (K<sub>SP</sub>/15)<sup>1/8</sup>
D.	S = (K<sub>SP</sub>/108)<sup>1/8</sup>
Answer» B. S = K<sub>SP</sub><sup>1/8</sup>

4.	What is the solubility product expression for silver chromate dissolving in water?
A.	[2Ag<sup>+</sup>][2CrO<sub>4</sub><sup>2-</sup>]
B.	[Ag<sup>+</sup>]<sup>2</sup> [Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>]<sup>2</sup>
C.	[Ag<sup>+</sup>]<sup>2</sup> [Cr<sub>2</sub>O<sub>4</sub><sup>2-</sup>]<sup>2</sup>
D.	[Ag<sup>+</sup>]<sup>2</sup> [CrO<sub>4</sub><sup>2-</sup>]<sup>2</sup>
Answer» E.

5.	At NTP, the solubility of natural gas in water is 0.8 mole of gas/kg of water. What is the Henry s law constant for natural gas?
A.	8 kN/m<sup>2</sup>
B.	7.90 x 10<sup>-3</sup> Pa
C.	71.36 bar
D.	105 mmHg
Answer» D. 105 mmHg

6.	What is the substance, present in a larger quantity that tends to establish homogenous bonds with a foreign substance, introduced in smaller quantity?
A.	Solute
B.	Element
C.	Solvent
D.	Compound
Answer» C. Solvent

7.	What is the concentration of N2 in a fresh water stream in equilibrium with air at 298 K and 1 atmosphere? Given the value of KH for N2 = 0.00060 mole/kgbar.
A.	0.0474 g/kg
B.	0.0005 g/kg
C.	1316.7 g/kg
D.	13.3 g/kg
Answer» E.

8.	Which of the following best describes the difficulty in breathing as one climbs to higher altitudes?
A.	Henry s law
B.	Raoult s law
C.	Osmotic pressure
D.	Relative lowering of atmospheric pressure
Answer» B. Raoult s law

9.	If, at 298 K water is the solvent, and Henry s law constant for CO2 is 1.67 kbar and the constant of argon is 40.3 kbar, which of the following statements is true?
A.	Argon is more soluble than CO<sub>2</sub>
B.	Argon is less soluble than CO<sub>2</sub>
C.	Argon is insoluble in water
D.	Argon and CO<sub>2</sub> are equally soluble
Answer» C. Argon is insoluble in water

10.	When CO2 is introduced into aerated drinks and sealed, what is the nature of the graph between partial pressure of CO2 and its concentration in the drink?
A.	Exponentially increasing
B.	Positive slope
C.	Negative slope
D.	Constant
Answer» C. Negative slope

11.	How does the solubility of gas change in a liquid, as described?
A.	Increases with decreasing pressure
B.	Increases with increasing temperature
C.	Decreases with increasing temperature
D.	Decreases with increasing pressure
Answer» D. Decreases with increasing pressure

12.	In a saturated solution with endothermic dissolution, how does the concentration of dissolved solute change with increasing then decreasing temperature?
A.	Keeps increasing
B.	Keeps decreasing
C.	Increases and decreases
D.	Decreases and increases
Answer» E.

13.	The process of dissolution of solute in the solvent takes place even after saturation . Is this true or false?
A.	True
B.	False
Answer» B. False

14.	Which of the following solvents would most likely dissolve 3-Aminopropan-1-ol?
A.	C<sub>6</sub>H<sub>5</sub>OH
B.	C<sub>2</sub>H<sub>5</sub>OH
C.	H<sub>2</sub>O
D.	CH<sub>3</sub>COCH<sub>3</sub>
Answer» D. CH<sub>3</sub>COCH<sub>3</sub>

15.	What is defined as the concentration of dissolved solute in a solvent beyond which none of it, if added to the solvent, will increase the concentration further more?
A.	Solubility
B.	Saturation point
C.	Solvent capacitance
D.	Molar equilibrium concentration
Answer» B. Saturation point