R4RIN – MCQs, Mock Tests | CSS[FPSC-U.S. Civil Service Commission]-USA [USA] Current Affairs 2021 Set 8

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 science of lightning is called

1. Aerology
2. Meteorology
3. Electeorology
4. Fulminology

✅ Correct Answer: 4

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

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

✅ Correct Answer: 4

The most densest substance on the Earth is

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

✅ Correct Answer: 4

The planet which is easily visible from the Earth is

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

✅ Correct Answer: 2

For a fixed mass of gas at constant temperature, if we decrease volume, the pressure will

1. also decrease
2. increase
3. remains constant
4. none of these

✅ Correct Answer: 2

The lifespan of Red Blood Cells is __________ days.

1. 60
2. 120
3. 180
4. 240

✅ Correct Answer: 2

The density of water is

1. 1 g/cm3
2. 1.5 g/cm3
3. 2 g/cm3
4. none of these

✅ Correct Answer: 1

Radioactivity was discovered by

1. Lord Kelvin
2. J. J. Thomson
3. Ernest Rutherford
4. Henri Becquerel

✅ Correct Answer: 4

The Suns mass is mainly consist of hydrogen (about 73%). The second main constituent (about 25%) is

1. hydrogen
2. helium
3. carbon dioxide
4. nitrogen

✅ Correct Answer: 2

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

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

Which of these is an anti-viral protein?

1. Urokinase
2. Thymosin
3. Insulin
4. Interferon

✅ Correct Answer: 4

Pathogens contains special proteins called:

1. antigens
2. trypsin
3. lipase
4. Amylase

✅ Correct Answer: 1

Which of these addictive drugs are also used as painkillers?

1. Narcotics
2. Sedatives
3. Hallucinogens
4. All can be used

✅ Correct Answer: 1

Biomass is converted into fuel by:

1. Fermentation
2. Reflection
3. Scattering
4. Evaporation

✅ Correct Answer: 1

What is the original source of energy for biomass?

1. Earth
2. Moon
3. Sun
4. Star

✅ Correct Answer: 3

CNG stands for

1. Converted Natural Gas
2. Conduced Natural Gas
3. Conducted Natural Gas
4. Compressed Natural Gas

✅ Correct Answer: 4

Which from the following is true for Sound?

1. Sound cannot travel through a vacuum
2. Sound cannot travel through gases
3. Sound cannot travel through liquids
4. Sound cannot travel through solids

✅ Correct Answer: 1

When white light is passed through a prism, it splits into _______ colours.

1. 5
2. 6
3. 7
4. 8

✅ Correct Answer: 2

1 nanometer = ?

1. 10–3 meter
2. 10–6 meter
3. 10–9 meter
4. 10–12 meter

✅ Correct Answer: 3

Instrument used for measuring very high temperature is

1. Pyroscope
2. Pyrometer
3. Seismograph
4. Xylometer

✅ Correct Answer: 2

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

The nearest planet to the Earth is

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

✅ Correct Answer: 1

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

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