States of Matter Practice Questions
NEET · Chemistry · 1611 free MCQs with instant results and detailed explanations.
1611
Total
365
Easy
699
Medium
547
Hard
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Topics in States of Matter
Ideal Gas Equation
395
Liquefaction
437
Real Gases
411
Gas Laws
368
Sample Questions from States of Matter
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the relationship between pressure and volume in Boyle's Law?
A.
Pressure increases as volume decreases
B.
Pressure increases as volume increases
C.
Pressure is independent of volume
D.
Pressure decreases as volume decreases
Show Answer & Explanation
Correct Answer: A
Boyle's Law states that pressure is inversely proportional to volume at constant temperature. Therefore, as volume decreases, pressure increases.
Q2
Easy
At constant temperature, if the volume of a gas is doubled, what happens to its pressure?
A.
Pressure doubles
B.
Pressure remains the same
C.
Pressure halves
D.
Pressure increases fourfold
Show Answer & Explanation
Correct Answer: C
According to Boyle's Law, if the volume of a gas is doubled, the pressure is halved at constant temperature.
Q3
Easy
What constant is used in the Ideal Gas Law equation PV = nRT?
A.
Temperature
B.
Pressure
C.
Gas constant (R)
D.
Volume
Show Answer & Explanation
Correct Answer: C
In the Ideal Gas Law, R is the universal gas constant that relates pressure, volume, and temperature for an ideal gas.
Q4
Medium
What is the relationship between pressure and volume of a gas at constant temperature according to Boyle's Law?
A.
Directly proportional
B.
Inversely proportional
C.
Independent
D.
Directly related to temperature
Show Answer & Explanation
Correct Answer: B
Boyle's Law states that pressure is inversely proportional to volume for a fixed amount of gas at constant temperature. This means that as one increases, the other decreases.
Q5
Medium
If the volume of a gas is doubled while maintaining a constant pressure, what happens to the temperature of the gas according to Charles's Law?
A.
It remains the same
B.
It doubles
C.
It halves
D.
It decreases
Show Answer & Explanation
Correct Answer: B
According to Charles's Law, when the volume of a gas is increased at constant pressure, the temperature must also increase directly to maintain the relationship, thus it doubles.
Q6
Medium
A gas occupies a volume of 10 L at a pressure of 2 atm. What will be the new volume if the pressure is changed to 1 atm while keeping the temperature constant?
A.
5 L
B.
10 L
C.
20 L
D.
15 L
Show Answer & Explanation
Correct Answer: C
Using Boyle's Law (P1V1 = P2V2), we can calculate the new volume: 2 atm × 10 L = 1 atm × V2, which gives V2 = 20 L.
Q7
Medium
A gas at 300 K expands to a volume of 30 L at constant pressure. If the new volume is 60 L, what is the new temperature?
A.
600 K
B.
300 K
C.
150 K
D.
900 K
Show Answer & Explanation
Correct Answer: A
According to Charles's Law (V1/T1 = V2/T2), if V1 = 30 L, T1 = 300 K, and V2 = 60 L, then T2 = (60 L * 300 K) / 30 L = 600 K.
Q8
Hard
A gas occupies a volume of 20 L at a pressure of 2 atm. What will be the new volume if the pressure is increased to 4 atm, assuming constant temperature?
A.
10 L
B.
5 L
C.
20 L
D.
40 L
Show Answer & Explanation
Correct Answer: A
According to Boyle's Law (P1V1 = P2V2), if the pressure doubles, the volume will be halved. Therefore, the new volume will be 10 L.
Q9
Hard
A sample of gas is at 300 K and has a volume of 10 L. If the temperature is decreased to 150 K, what will be the new volume of the gas assuming pressure is constant?
A.
5 L
B.
10 L
C.
15 L
D.
20 L
Show Answer & Explanation
Correct Answer: A
According to Charles's Law (V1/T1 = V2/T2), when temperature decreases, volume also decreases proportionally. Thus, V2 = (10 L * 150 K) / 300 K = 5 L.
Q10
Hard
If a gas mixture contains 2 moles of gas A at 3 atm and 1 mole of gas B at 2 atm, what is the total pressure of the mixture using Dalton's Law of Partial Pressures?
A.
5 atm
B.
3 atm
C.
2 atm
D.
6 atm
Show Answer & Explanation
Correct Answer: A
Dalton's Law states that the total pressure of a gas mixture is the sum of the partial pressures of each component. For gas A (3 atm) and gas B (2 atm), the total pressure is 3 atm + 2 atm = 5 atm.
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States of Matter — NEET Chemistry Practice Questions Online
This page contains 1611 practice MCQs for the chapter States of Matter in NEET Chemistry. The questions are organized by difficulty — 365 easy, 699 medium, 547 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.