Explanation

"Believe" fits logically, as doctors/lawyers hold opinions about advertising.

"Effect" (as a verb) means to bring about a change, which aligns with the impact of advertising on their professions.

Explanation

Rocket velocity is governed by the rocket equation, which depends on exhaust velocity and the rate of mass ejection.

Higher exhaust velocity and more mass loss (fuel ejection) produce greater thrust, resulting in higher rocket velocity.

Explanation

James Harrison, an Australian inventor, is credited with creating the first practical refrigeration system in 1856.

His work laid the foundation for modern refrigeration technology, which was crucial for preserving food and other goods.

Explanation

The United States announced its withdrawal from the JCPOA

It is also known as the "Iran nuclear deal" or the "Iran deal", on May 8, 2018.

JCPOA stands Joint Comprehensive Plan of Action

The JCPOA is an agreement on Iran's nuclear program reached in July 2015 by Iran and the P5+1

P5+1 (the five permanent members of the United Nations Security Council)

1. China
2. France
3. Russia
4. United Kingdom
5. United States—plus Germany

Explanation

The six-party talks aimed to find a peaceful resolution as a result of the North Korean nuclear weapons program.

There was a series of meetings with six participating states in Beijing:

•  China
•  Japan
•  North Korea
•  South Korea
• Russia
• United States

Explanation

Given numbers:
0.1, 0.21, 0.31, 0.41, 0.51

Step 1: Add all the numbers

$$0.1 + 0.21 + 0.31 + 0.41 + 0.51 = 1.54$$

Step 2: Divide by the number of values

$$frac{1.54}{5} = 0.308$$

Explanation

First, convert both to the same unit (grams):

3.5 kg = 3500 grams

280 grams (already in grams)

Ratio = 3500 : 280

Simplifying the ratio:

3500 / 280 = 12.5

280 / 280 = 1

12.5 : 1 = 25 : 2 (after multiplying both parts by 2)

Explanation

Familiar means واقفیت

The correct preposition after "familiar" when referring to a person is "to".

"Familiar to" means we recognize it or have seen it before.

Explanation

Affectation – دکھاوا، بناوٹ

Pretence (بناوٹ، دکھاوا)

Explanation

We are given:

• 5 men and 2 boys = 4 times (1 man + 1 boy)

Step 1: Let work capacities be M (man) and B (boy)

• Work done by 5M + 2B = 4 (M + B)
• Expanding: $5M+2B=4M+4B$
• Rearranging: $5M-4M=4B-2B$
• $$M=2B

So, the ratio of a man’s work to a boy’s work = 2:1.

Answer: (b) 2:1