All-in-One Exam Prep Platform

Explanation

The British physicist Sir James Chadwick discovered neutrons in the year 1932.

He was awarded the Nobel Prize in Physics in the year 1935 for this discovery.

Explanation

Generally prefer is followed by To.

To is a preposition here.

Prefer means ترجیع دینا

I prefer tea to coffee. 

Explanation

1 kilocalorie (kcal) = 4184 joules, commonly used in food energy.

1 calorie (cal) = 4.184 joules, so 1000 cal = 4184 J.

Explanation

Explanation

Honesty never goes to waste.

The subject "Honesty" is singular and uncountable,

And the sentence is in the present simple tense, expressing a universal truth or general fact.

In present simple tense: Singular subject → verb + s/es

Explanation

Calcium chloride (CaCl₂) is a hygroscopic substance, meaning it absorbs moisture from the air.

It is commonly used as a drying agent in desiccators to keep the environment moisture-free.

Explanation

Both Laugh and Sneer are followed by preposition at. 

Sneer at means مزاق اڑانا یا طنز کرنا

You should not sneer at the boy.

We must not sneer at elders. 

He was laughing at the poor.

Explanation

For 2p orbitals, the principal quantum number (n) is 2.

The azimuthal quantum number (l) for a p-orbital is 1.

So, n = 2, l = 1 is correct.

Explanation

Chloroform is classified as a possible human carcinogen, particularly linked to liver and kidney cancer with prolonged exposure.

It affects the liver by causing cellular damage.

It has been shown to induce tumors in animal studies.

Explanation