Explanation

Acids react with metals to produce salt and hydrogen gas.

Example: Hydrochloric acid + Zinc → Zinc chloride + Hydrogen gas.

Explanation

In a single displacement reaction, one element replaces another in a compound.

Here, C replaces B in the compound AB, forming A + BC.

Explanation

Explanation

A region is an area where geographical, social, and cultural aspects are similar.

It can be based on physical features, cultural traits, or administrative boundaries.

Region means سرزمین, کشور, خطہ, ارض, زمین, طبق, دیار, علاقہ

Explanation

Explanation

Explanation

Explanation

تلمیح سے مراد ہے کہ ایک لفظ یا مجموعہ الفاظ کے ذریعے کسی تاریخی' سیاسی' اخلاقی یا مذہبی واقعے کی طرف اشارہ کیا جائے۔ 

Explanation

A number is divisible by 11 if the difference between the sum of its digits in odd positions and the sum of its digits in even positions is a multiple of 11 (including 0).

For 7879553:

• Sum of odd-positioned digits = 7 + 7 + 5 + 3 = 22
• Sum of even-positioned digits = 8 + 9 + 5 = 22
• Difference = 22 - 22 = 0 (which is a multiple of 11)

Thus, 7879553 is divisible by 11.

Explanation

"Must" expresses necessity or compulsion.

It indicating that being there before 8 o’clock is required.