laboursonline – MCQs, Mock Tests | CSS[FPSC-U.S. Civil Service Commission]-USA [USA] CURRENT AFFAIRS MCQ GENERAL SCIENCE

The Sun is a/an

1. Star
2. Planet
3. Asteroid
4. Meteor

✅ Correct Answer: 1

The average adult has a blood volume of about ___ liters.

1. 4
2. 5
3. 6
4. 7

✅ Correct Answer: 2

The most abundant element in the universe is

1. Oxygen
2. Hydrogen
3. Carbon Dioxide
4. Silicon

✅ Correct Answer: 2

The most abundant element in the Earths crust is

1. Oxygen
2. Hydrogen
3. Carbon Dioxide
4. Silicon

✅ Correct Answer: 1

Each day human body breathe in ___ liters of air.

1. 5,000 to 10,000
2. 10,000 to 15,000
3. 15,000 to 20,000
4. 20,000 to 25,000

✅ Correct Answer: 3

Deficiency of Vitamin-D results in

1. night blindness
2. rickets
3. scurvy
4. hair fall

✅ Correct Answer: 2

The SI unit of pressure is

1. pascal
2. joule
3. tesla
4. henry

✅ Correct Answer: 1

The most densest substance on the Earth is

1. Platinum
2. Copper
3. Steel
4. Osmium

✅ Correct Answer: 4

A camera uses a ____ to form an image.

1. convex lens
2. concave lens
3. condenser lens
4. none of these

✅ Correct Answer: 1

Which from the following is NOT a conductor?

1. Aluminium
2. Silicon
3. Graphite
4. All are conductors

✅ Correct Answer: 4

Sound waves are ____ waves.

1. Transverse
2. Electromagnetic
3. Longitudinal
4. none of these

✅ Correct Answer: 3

The lifespan of White Blood Cells is ___ day(s).

1. 1
2. 2
3. 3
4. 4

✅ Correct Answer: 1

The fluid part of blood is known as

1. plasma
2. platelets
3. blood cells
4. hormones

✅ Correct Answer: 1

X-rays were discovered by

1. Rontgen
2. Thomson
3. Rutherford
4. Bacquerel

✅ Correct Answer: 1

The speed of light is

1. 280,000 km/s
2. 300,000 km/s
3. 320,000 km/s
4. none of these

✅ Correct Answer: 2

During winter in cold countries, the ____ is mixed to melt the ice on the icy roads.

1. Salt
2. Chlorine
3. Carbon dioxide
4. Water

✅ Correct Answer: 1

In a very low temperature which from the following will freeze at last?

1. River water
2. Canal water
3. Sea water
4. Water in a lake

✅ Correct Answer: 3

The nearest planet to the Earth is

1. Venus
2. Mercury
3. Mars
4. Moon

✅ Correct Answer: 1

The planet that moves round the Sun at the highest speed is

1. Jupiter
2. Venus
3. Mars
4. Mercury

✅ Correct Answer: 4

In general, Comets have _____ orbits.

1. Elliptical
2. Highly elliptical
3. Circular
4. Parabolic

✅ Correct Answer: 2

GPS is an abbreviation for

1. Global Poles System
2. Global PolySiliconium Store
3. Global Positioning System
4. Global Position Structure

✅ Correct Answer: 3

Oxidation is a chemical reaction involving the

1. Gain of Electrons
2. Loss of Electrons
3. Gain of Protons
4. Loss of Protons

✅ Correct Answer: 2

At night, Plants intake _____ and release ______.

1. Oxygen, Carbon dioxide
2. Carbon dioxide, Oxygen
3. Oxygen, Carbon monoxide
4. Carbon monoxide, Oxygen

✅ Correct Answer: 1

Urine is produced in

1. Kidneys
2. Lungs
3. Large intestine
4. Liver

✅ Correct Answer: 1

Blood is cleaned by

1. Lungs
2. Liver
3. Heart
4. Kidneys

✅ Correct Answer: 4

The position of an element in the Periodic Table is determined by its _____ number.

1. Electron
2. Proton
3. Neutron
4. Positron

✅ Correct Answer: 2

The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in ___ of sea water.

1. 1 gram
2. 10 grams
3. 1 kg
4. 10 kg

✅ Correct Answer: 3

The planet which is easily visible from the Earth is

1. Mercury
2. Venus
3. Mars
4. Jupiter

✅ Correct Answer: 2

In the solar system, the Great Spot is on the planet

1. Saturn
2. Venus
3. Mars
4. Jupiter

✅ Correct Answer: 4

The Great Spot is a

1. Mountain
2. Desert
3. Frozen Carbon dioxide
4. Storm

✅ Correct Answer: 4

Quartz is a crystalline mineral composed of Silicon and _____ atoms.

1. Carbon
2. Hydrogen
3. Oxygen
4. Aluminum

✅ Correct Answer: 3

The bodyguard of the Earth is _____ that save the Earth from many Comets and Asteroids.

1. Mars
2. Saturn
3. Uranus
4. Jupiter

✅ Correct Answer: 4

1 light year =

1. 9.5×106 km
2. 9.5×109 km
3. 9.5×1012 km
4. 9.5×1018 km

✅ Correct Answer: 3

The planets visible to us without using a telescope are

1. 3
2. 4
3. 5
4. 6

✅ Correct Answer: 3

According to Big Bang Theory, the Universe began about ________ billion years ago.

1. 10 - 20
2. 20 - 30
3. 30 - 40
4. 40 - 50

✅ Correct Answer: 1

Biosensor is used to measure?

1. Blood glucose level
2. The body pH value
3. Amount of hemoglobin
4. Salinity in Urine

✅ Correct Answer: 1

Einsteins famous equation which states that mass and energy are interchangeable is

1. E = mc2
2. E = cm2
3. M = ec2
4. M = ce2

✅ Correct Answer: 1

The SI unit of electric current is

1. Coulomb
2. Ampere
3. Volt
4. Watt

✅ Correct Answer: 2

The principal constituent of the atmosphere of the Earth is

1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen

✅ Correct Answer: 4

What is Dry Ice?

1. Solid Oxygen
2. Solid Carbon Dioxide
3. Solid Hydrogen
4. Solid Nitrogen

✅ Correct Answer: 2

Which are the three primary colours?

1. White, Black, Blue
2. Red, Yellow, Blue
3. Red, Orange, Blue
4. Red, Green, Blue

✅ Correct Answer: 4

Digestion of food is completed in the

1. small intestine
2. large intestine
3. stomach
4. Liver

✅ Correct Answer: 1

Carrot is good source of vitamin

1. A
2. B complex
3. C
4. D

✅ Correct Answer: 1

For proper formation of teeth, _______ is essential.

1. iodine
2. copper
3. fluorine
4. iron

✅ Correct Answer: 3

Deficiency of ________ causes loss of appetite and poor growth

1. zinc
2. iodine
3. copper
4. iron

✅ Correct Answer: 1

______ is the partial or complete wasting away of a part of a body.

1. Atrophy
2. Leprosy
3. Tetanus
4. Noma

✅ Correct Answer: 1

Which of the following statements is true about drug Imodium?

1. Slows the rate at which the stomach and oesophagus move
2. Encourages water and electrolytes reabsorption
3. Decrease density of stools
4. None of these

✅ Correct Answer: 2

Hypovolaemia can be treated by:

1. Oral replacement solution
2. 5% dextrose
3. Colloid Solution
4. 0.6% Saline

✅ Correct Answer: 3

Effects of having Thiamine deficiency are:

1. Muscle weakness
2. Central nervous system and Cardiovascular problems
3. Heart disease and Beri beri disease
4. All of these

✅ Correct Answer: 4

When the Cardiac output decreased?

1. On standing up
2. On cutting the vagus nerves to the heart
3. As a consequence of decreased pressure in the carotid sinus
4. By increasing the end-diastolic volume of the heart

✅ Correct Answer: 1