Explanation

He said that he could solve your problem.

"Can" changes to "could" in indirect speech (past reporting verb: "said").

The pronoun "I" becomes "he", and "your" stays the same (referring to the listener).

Explanation

One of my school teams won the cricket match.

"One" refers to a number or a single item, and "won" is the past tense of win.

These are homophones — they sound the same but have different meanings and spellings.

Explanation

Calculating the Total Bill

1. Sandwiches: 3 × 250 = Rs. 750

2. Cold drinks: 2 × 180 = Rs. 360

3. Coffee: Rs. 210

4. Total food cost: 750 + 360 + 210 = Rs. 1320

5. Tax: Rs. 112

6. Total bill: 1320 + 112 = Rs. 1432

Change Calculation

Amount paid: Rs. 5000

Change = 5000 - 1432 = Rs. 3568

Explanation

The kidney, ureter, and bladder are key organs of the excretory system, responsible for removing waste from the body.

They help maintain water balance, filter blood, and produce urine.

Explanation

Sputnik-2, launched by the Soviet Union on 3rd November 1957, weighed approximately 508 kilograms.

It carried Laika, the first living creature (a dog) to orbit Earth.

Explanation

"Playing" has an inflectional ending “-ing” that shows progressive tense.

Inflectional endings modify a word's tense, number, or degree without changing its core meaning.

Explanation

"She's" is the correct contraction of "she is" (She + is = She's).

The apostrophe (') replaces the missing letter "i" in "is".

Explanation

High-frequency radio waves from mobile phones may affect the brain’s electrical activity, leading to sleep disturbances and increased stress levels.

Studies have linked prolonged exposure to electromagnetic radiation with potential risks like headaches, anxiety, and reduced sleep quality.

Explanation

Hydrochloric acid (HCl) contains one ionizable hydrogen atom, which dissociates in water to form H⁺ and Cl⁻ ions.

It is classified as a monoprotic acid, meaning it donates only one proton (H⁺) per molecule.

Explanation

Pakistan has three branches of government:

1. The Legislative Branch makes the laws.
2. The Executive Branch carries out the laws.
3. The Judiciary Branch evaluates and interprets the laws.

The military is a part of the state apparatus but not a formal branch of government.

The Legislative Branch, or Parliament, has two houses: the National Assembly and the Senate

1. National Assembly: It makes laws for the federation and keeps a check over the Executive. 

2. The Senate is the body that represents the provinces and promotes a feeling of equality, peace, and harmony.