Explanation

He’s one of the tallest boys in the class.

The phrase "one of the..." must be followed by a plural noun like "boys."

Explanation

Orbital velocity is 1/√2 times escape velocity, derived from gravitational motion equations.

Explanation

The National Assembly approved the 1973 Constitution on April 10, 1973

• and it came into effect on August 14, 1973.

• Zulfikar Ali Bhutto was the Prime Minister of Pakistan from this date

• and Fazal Ilahi Chaudhry was appointed as the President of Pakistan.

This Constitution is called the Constitution of the Islamic Republic of Pakistan 1973

Additional information:

1. The constitution of 1956 was abrogated by Iskander Mirza (7 October 1958)

2. The Constitution of 1962 was abrogated by Yahya Khan (26th March 1969)

3.  Constitution of 1973 (Zulfiqar Ali Bhutto)

Explanation

Erect کھڑا ہونا

Bend جھکنا

Explanation

The property that does not depend on the nature of the solute molecule is the Colligative property. 

Colligative properties depend solely on the number of solute particles present in a solution, not their identity or chemical nature. 

Explanation

An arithmetic sequence is a sequence of numbers where the difference between consecutive terms is constant.

Let’s check each option:

B. 72, 73, 75, 78
Differences: +1, +2, +3 → Not arithmetic

A. 31, 32, 33, 34
Common difference: +1 → Arithmetic

C. 11, 15, 17, 23

Differences: +4, +2, +6 → Not arithmetic

Explanation

 Le Chatelier's principle states that when a system at equilibrium is subjected to a change (like temperature), the system will shift to counteract the change and re-establish a new equilibrium. 

Explanation

• Total amount = 129,000

• People involved:

  • 5 sons → each gets 5x

  • 4 daughters → each gets 4x

  • 3 nephews → each gets x

Let the amount each nephew gets be x

Now express the total amount in terms of x:

• Nephews: $3x$
  

• Daughters: $4\times 4x=16x$

• Sons: $\mathrm{<br>}$

• Total = $3x+16x+25x=44x$

Set up the equation:

$$44x = 129000 Rightarrow x = frac{129000}{44} = ₹2931.82overline{72}$$44​=2931.8272

Explanation

Quadratic equations have roots that can be:

• Real and distinct
• Real and equal
• Imaginary
• Rational or irrational

“Cubic” relates to degree 3, not to root types.

Explanation

When flipping a coin 3 times, each flip has 2 possible outcomes (heads or tails).

So, the total number of outcomes is 2³ = 8.

The favorable outcome is getting 3 heads (HHH).

There is only 1 way to achieve this.

Probability = Number of favorable outcomes / Total number of outcomes = 1/8 = 0.125.