Explanation

The "Page Down" key is used to scroll down one page at a time in a document, webpage, or other content on a computer screen.

Explanation

In MS Word, the "Home" keyboard key is used to move the cursor to the beginning of the current line.

This shortcut is often used to quickly navigate to the start of a line, especially when editing or formatting text.

Explanation

امیر خسرو فارسی اور اردو کے صوفی شاعر۔ ماہر موسیقی ،انھیں طوطی ہند کہا جاتا ہے

Explanation

حیات جاوید مولانا الطاف حسین حالی کی لکھی ہوئی سانح عمری ہے

۔ جو 1901 میں شائع ہوئی تھی۔

اس میں مولانا حالی نے مشہور و معروف نثر نگار اور علی گڑھ تحریک کے بانی سرسید احمد خان کے حالات زندگی

اور ان کے علمی و ادبی کارناموں کا مفصل احوال درج کیا ہے ۔

Explanation

The ratio of Ali's amount to Asim's amount is:

$$text{Ratio} = frac{20}{16} = frac{5}{4}$$

So, the correct ratio is 5:4.

Explanation

"The branch of biology that deals with organisms living in the ocean is called marine biology."
:
The term Marine Biology is used to refer to the study of marine organisms and ecosystems.

Explanation

Corrected narration:
"He said that if he worked hard, he would pass the exam."

In indirect speech, we change the present tense to the past tense. "Will" becomes "would," and "I" becomes "he."

Explanation

"One should do one’s duty."
 The sentence is correct as it is. "Duty" refers to a responsibility or task, and the sentence is an imperative general statement.

Explanation

Explanation