Explanation

A's father = B

C is B's father ⇒ C is A's paternal grandfather

D is A's mother ⇒ D is B’s wife

So, C is father of B, and B is husband of D ⇒ C is father-in-law of D.

Explanation

120 men can do work = 30 days

1 man can do this work = 120 x 30 = 3600 days

80 men can do this work = 3600/80 = 45 days

Explanation

0.05 is equivalent to the fraction 1/20 because 0.05 is the same as 5/100, which simplifies to 1/20.

Explanation

Wheat is a Rabi crop.

Rabi crop is grown in autumn or early winter

They harvested in spring or early summer

They are grown in October or November. 

major rabi crop in India and Pakistan is:

• wheat, 
• barley,
• mustard,
• sesame,
•  peas.

Rabi crops are known as winter crops.

ND23-4-2023

Explanation

Cost of 15 toys = Rs. 234

Cost of 1 toy = Rs. 234 ÷ 15 = Rs. 15.60

Cost of 35 toys = Rs. 15.60 x 35 = Rs. 546

So, the correct answer is: Rs. 546

Explanation

“Origin of Species” is a work of scientific literature by Charles Darwin 

It was published on 24 November 1859,

The book is considered to be the foundation of evolutionary biology.

ND5-5-2023

Explanation

Callibre is incorrect.

Calibre is correct.

Explanation

Ad-Dukhan  is the 44th chapter (surah) of the Quran .

59 verses.

The word dukhan, meaning 'smoke', is mentioned in verse 10

Explanation

Efflorescence means بہاؤ

Explanation

Ozone (O₃) is a triatomic (three-atom) allotropic form of oxygen

Allotropy: is when an element exists in different forms in the same physical state. 

Oxygen: is the element in question. 

Ozone (O₃): is the specific allotropic form that contains three oxygen atoms in each molecule. 

Diatomic oxygen (O₂): is the other common allotrope of oxygen, containing two oxygen atoms per molecule.