ObjectiveMCQ
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Question 1
Open questionAccording to Boyle’s Law, the product of pressure and volume of a gas at constant temperature is?
A: Zero
B: Constant
C: Inversely proportional to T
D: Infinite
Correct Answer: B — B: Constant
Boyle’s law: (at constant T).
Question 2
Open questionWhich of the following is a non-metal?
A: Iron
B: Copper
C: Sulphur
D: Aluminium
Correct Answer: C — C: Sulphur
Sulphur (S) is a non-metal.
Question 3
Open questionA solution with pH = 7 is considered?
A: Acidic
B: Basic
C: Neutral
D: Strongly basic
Correct Answer: C — C: Neutral
pH 7 represents a neutral solution like pure water.
Question 4
Open questionWhat type of bond is formed between sodium (Na) and chlorine (Cl) in NaCl?
A: Covalent bond
B: Metallic bond
C: Ionic bond ✓
D: Hydrogen bond
Correct Answer: C — C: Ionic bond ✓
Na donates an electron to Cl, forming an ionic bond.
Question 5
Open questionWhich group in the periodic table is known as the alkali metals?
A: Group 2
B: Group 1 ✓
C: Group 17
D: Group 18
Correct Answer: B — B: Group 1 ✓
Group 1 elements (Li, Na, K, Rb, Cs, Fr) are called alkali metals.
