R4RIN – MCQs, Mock Tests | CSS[FPSC-U.S. Civil Service Commission]-USA [USA] Current Affairs 2021 Set 9

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

Meteorology is the study of?

1. seasons
2. atmosphere
3. air and sounds
4. winds and clouds

✅ Correct Answer: 2

Diamond is an allotropic form of

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

✅ Correct Answer: 1

The SI unit of Heat is

1. Watt
2. Volt
3. Joule
4. Newton

✅ Correct Answer: 3

The good sources of Vitamin-A are

1. green leafy vegetables
2. seeds
3. fresh vegetables and fruits
4. sea foods

✅ Correct Answer: 1

The good sources of Vitamin-B Complex are

1. green leafy vegetables
2. seeds
3. fresh vegetables and fruits
4. sea foods

✅ Correct Answer: 2

The good sources of Vitamin-C are

1. green leafy vegetables
2. seeds
3. fresh vegetables and fruits
4. sea foods

✅ Correct Answer: 3

The good sources of iodine are

1. green leafy vegetables
2. seeds
3. fresh vegetables and fruits
4. sea foods

✅ Correct Answer: 4

The gas, commonly known as laughing gas, is

1. Cabon Dioxide
2. Sulfur Dioxide
3. Nitrous Oxide
4. Sodium Oxide

✅ Correct Answer: 3

The source of oxygen in photosynthesis is

1. water
2. salts
3. minerals
4. glucose

✅ Correct Answer: 1

The instrument used to measure wind speed is

1. Anemometer
2. Barometer
3. Hydrometer
4. Hygrometer

✅ Correct Answer: 1

The natural fats and oils are composed of

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

✅ Correct Answer: 1

The energy value of food is measured in

1. Joule
2. Calories
3. Tesla
4. Proteins

✅ Correct Answer: 2

Wind energy is the __________ energy.

1. Potential
2. Transverse
3. Kinetic
4. Mechanical

✅ Correct Answer: 3

Who is considered the founder of meteorology?

1. Aristotle
2. Plato
3. Einstein
4. Newton

✅ Correct Answer: 1

Water covers __________ of the Earths surface.

1. 60%
2. 65%
3. 70%
4. 75%

✅ Correct Answer: 3

In general, wind speed of 105 -137 km/h cause

1. minor or no damage
2. considerable damage
3. severe damage
4. extreme damage

✅ Correct Answer: 1

Acid rain is mainly caused by emissions of __________ in the atmosphere.

1. Sulfur Dioxide and Potassium Nitrate
2. Sulfur and Charcoal
3. Nitrogen Oxide and Potassium Nitrate
4. Sulfur Dioxide and Nitrogen Oxide

✅ Correct Answer: 4

About 50% of the Earths crust, including the waters on the Earth and atmosphere, is

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

✅ Correct Answer: 1

The fourth state of matter is

1. Water
2. Salts
3. Vapours
4. Plasma

✅ Correct Answer: 4

The device used to convert Alternate Current into Direct Current is called

1. Anemometer
2. Battery
3. Galvanometer
4. Rectifier

✅ Correct Answer: 4

In night, when photosynthesis is stopped, plants

1. take in Carbon Dioxide
2. take in Oxygen
3. give off Carbon Dioxide
4. give off Oxygen

✅ Correct Answer: 3

During photosynthesis, plants

1. take in Carbon Dioxide
2. take in Oxygen
3. give off Carbon Dioxide
4. give off Oxygen

✅ Correct Answer: 4

__________ are called the powerhouses of the cell.

1. Mitochondria
2. Vesicles
3. Lungs
4. Liver

✅ Correct Answer: 1

Mitochondria contain their own supply of

1. DNA
2. Amino acids
3. Vitamins
4. Oxygen

✅ Correct Answer: 1

The first chemical explosive, Gunpowder, is a mixture of

1. Sulfur, Charcoal and Nitrogen Oxide
2. Sulfur, Charcoal, and Potassium Nitrate
3. Sulfur and Charcoal
4. Charcoal and Potassium Nitrate

✅ Correct Answer: 2

The number of oscillations per second is called the

1. hertz
2. waves
3. pitch
4. frequency

✅ Correct Answer: 4

Sound waves from a loudspeaker are caused by

1. frequency
2. vibrations
3. pitch
4. amplitude

✅ Correct Answer: 2

The guitar has __________ strings.

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

✅ Correct Answer: 3

The device used to measure movements of the heart is

1. Cardiograph
2. Seismograph
3. Hydrometer
4. Hygrometer

✅ Correct Answer: 1

The unit used to measure Pressure is

1. pascal
2. newton
3. watt
4. tesla

✅ Correct Answer: 1

There are __________ methods of heat transfer.

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

✅ Correct Answer: 1

Which from the following is NOT a method of heat transfer?

1. Conduction
2. Convection
3. Radiation
4. All are methods of heat transfer

✅ Correct Answer: 4

If we heat one end of metallic rod, the other end gets hot. The method of heat transfer is

1. Conduction
2. Convection
3. Radiation
4. None of these

✅ Correct Answer: 1

A person seated in front of a fire receives heat by

1. Conduction
2. Convection
3. Radiation
4. None of these

✅ Correct Answer: 3

The unit used to measure magnetic flux is

1. pascal
2. farad
3. weber
4. henry

✅ Correct Answer: 3