Explanation

Reported speech requires correct tense and structure.

After "He told us", we use "that" + past tense if the reporting verb is in the past.

"Enjoyed" matches the past tense of "told."

Correct sentence: He told us that he enjoyed the movie.

Explanation

The formula for density is:

Density = Mass ÷ Volume

It represents how much mass is packed into a given volume.

Explanation

Every woman should vote for the candidate of her choice.

"Every woman" is singular.

Therefore, the pronoun should also be singular → "her", not "their".

"Their" is plural and incorrect for the singular noun woman.

Explanation

"Almost each day" is grammatically incorrect.

The correct phrase is "Almost every day", which is standard usage for frequency.

Explanation

Normal price = Sale price + Amount saved

= 150 + 50

= 200

Discount percentage = (Amount saved / Normal price) × 100

= (50 / 200) × 100

= 25%

Explanation

The atomic weight of Mercury (Hg) is 200.59 unified atomic mass units (u), as listed on the periodic table.

Key Information:

• Symbol: Hg (from Latin Hydrargyrum)
• Atomic Number: 80
• Standard Atomic Weight: 200.592 u (often rounded to 200.59 u).

Explanation

The sentence: "Islamabad is further from Lahore than it."

The word "further" is incorrect in comparison between two places (distance).

For physical distance, we use "farther", not "further."

Correct sentence: Islamabad is farther from Lahore than it.

Explanation

Given the pattern:

12 ∗ 21 = 9 = (2 - 1) × (2 + 1) = 1 × 3 = 3 doesn't fit, but (2 + 1)² = 3² = 9 fits

23 ∗ 32 = 25 = (3 - 2) × (3 + 2) = 1 × 5 = 5 doesn't fit, but (3 + 2)² = 5² = 25 fits

If the pattern is (last digit of first number + first digit of second number)²:

34 ∗ 43 = (4 + 4)² = 8² = 64 doesn't fit, but (4 + 3)² = 7² = 49 fits

Explanation

pH = –log [H⁺]

It measures the acidity or alkalinity of a solution based on the hydrogen ion concentration.

The pH scale ranges from 1 to 14, with:

• 1-6 being acidic
• 7 being neutral (neither acidic nor basic)
• 8-14 being basic (alkaline)

Explanation

Active voice: They will keep all banks open this Sunday.

Passive voice structure (Future Simple):

will be + past participle

keep → kept (past participle)

Correct passive: All banks will be kept open this Sunday by them.