CSS 2013 General Science and Ability MCQs

CSS 2013 — General Science and Ability MCQs

Question 1. Who proposed the concept “ All motion is relative ” ? (CSS 2013)

1. Albert Einstein

2. John Kepler

3. Galileo Galilie

4. None of these

Explanation — Motion and rest both can be taken as relative. It implies that if we adjust the fixed reference points for an object, it may be from one point of motion and from the other at rest. For instance, if two people are travelling in a vehicle, then both of them are at rest since the fixed reference point is inside the vehicle. Relative motion is the measurement of an object’s motion with respect to any other object that is moving or stationary. Thus, in reference to the other moving object, the acceleration is not measured with reference to the earth, but is the momentum of the object as if it were in a static state. For example- a person seated in a helicopter is at zero velocity relative to the helicopter, but is travelling with respect to the ground at the same velocity as the aeroplane. Relative motion is in turn related with relative momentum, relative acceleration and relative speed.

Question 2. The field of specialization of famous Muslim scientist Abu Usman Al Jahiz was: (CSS 2013)

1. Botany

2. Zoology

3. Astronomy

4. None of these

Explanation — Abu Othman Amr bin Bahr (776 – 868), generally known by his nickname Al-Jahiz, which means ‘goggle eyed”, was an Arab scholar of African descent who lived in the 8th and 9th centuries in modern day Iraq. He is widely known for his pioneering work, the Book of Animals.

Question 3. Albatross is: (CSS 2013)

1. A sea bird

2. A beetle

3. A fruit

4. None of these

Explanation — The Albatross is a large species of sea-bird found throughout the southern Pacific and even into the colder Antarctic regions.

Question 4. The sunlight can reach a depth of _____ meters in the ocean : (CSS 2013)

1. 100

2. 80

3. 120

4. None of these

Explanation — This surface layer of the ocean is also called the sunlight zone and extends from the surface to 200 meters (660 feet). It is in this zone that most of the visible light exists. With the light comes heating from sun. This heating is responsible for wide change in temperature that occurs in this zone, both in the latitude and each season.

Question 5. The biggest planet in our solar system is: (CSS 2013)

1. Venus

2. Pluto

3. Jupiter

4. None of these

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