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1 Physical Chemistry MCQs

Which law states that the amount of gas dissolved in a liquid is directly proportional to its partial pressure?

  • Dalton’s Law
  • Gay-Lussac’s Law
  • Henry’s Law
  • Raoult’s Law
0 Comments
Correct Answer: C. Henry’s Law

Explanation:

The solubility of gases in liquids is an important concept in physical chemistry. ... Read More Details

2 Physical Chemistry MCQs

The molecules of which gas move with the highest average speed?

  • H₂ at –73 °C
  • CH₄ at 300 K
  • N₂ at 1,027 °C
  • O₂ at 0 °C
0 Comments
Correct Answer: A. H₂ at –73 °C

Explanation:

The average speed of gas molecules is explained by the kinetic molecular theory ... Read More Details

3 Islamic Studies MCQs

A person who intends to perform Umrah and Hajj together and enters Ihram at Meeqat is called what in Islamic terminology?

  • Qiran
  • Mufrid
  • Mutamattik
  • None of them
0 Comments
Correct Answer: A. Qiran

Explanation:

In Islamic terminology, a pilgrim who intends to perform Umrah and Hajj together and enters ... Read More Details

4 Islamic Studies MCQs

How many types of Hajj are there in Islam?

  • Two
  • Three
  • Four
  • Five
0 Comments
Correct Answer: B. Three

Explanation:

In Islam, Hajj is one of the five pillars and has three recognized types: Hajj ... Read More Details

5 Organic Chemistry MCQs

What is the most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds?

  • Distillation
  • Extraction
  • Gas chromatography
  • Column chromatography
0 Comments
Correct Answer: D. Column chromatography

Explanation:

In organic chemistry, selecting the appropriate separation technique depends on the physical and ... Read More Details

6 Inorganic Chemistry MCQs

In a molecule of carbon monoxide (CO), what are the formal charges on the two atoms?

  • Carbon = 0, Oxygen = 0
  • Carbon = +1, Oxygen = –1
  • Carbon = –1, Oxygen = +1
  • Carbon = 0, Oxygen = –1
0 Comments
Correct Answer: C. Carbon = –1, Oxygen = +1

Explanation:

To determine the formal charges in a molecule, we use the formula:


Read More Details

7 Organic Chemistry MCQs

Which of the following solvents would best support an SN2 substitution reaction?

  • Water
  • Hexane
  • Dimethylformamide (DMF)
  • Ethanol
0 Comments
Correct Answer: C. Dimethylformamide (DMF)

Explanation:

The choice of solvent plays a critical role in determining the rate of ... Read More Details

8 Organic Chemistry MCQs

When an aldehyde reacts with hydrogen cyanide (HCN), a cyanohydrin is formed. This process is best described as:

  • Electrophilic addition
  • Electrophilic substitution
  • Nucleophilic addition
  • Nucleophilic substitution
0 Comments
Correct Answer: C. Nucleophilic addition

Explanation:

The reaction between aldehydes and hydrogen cyanide (HCN) is a classic example of ... Read More Details

9 Organic Chemistry MCQs

The relatively high energy of the gauche conformation of butane is mainly due to which type of strain?

  • Angle strain
  • Torsional strain
  • Steric strain
  • Orbital strain
0 Comments
Correct Answer: C. Steric strain

Explanation:

In organic chemistry, the study of conformational analysis helps us understand how molecules ... Read More Details

10 Physical Chemistry MCQs

What is the density of Argon gas at 30 °C temperature and 1.05 atm pressure?

  • 1.65 g/L
  • 1.67 g/L
  • 1.68 g/L
  • None of the above
0 Comments
Correct Answer: C. 1.68 g/L

Explanation:

The density of a gas can be determined using the ideal gas law, ... Read More Details

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