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Current Affairs January 2024

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4

In an atomic nucleus, neutrons and protons are held together by

A. Magnetic forces

B. Gravitational forces

C. Coulombic forces

D. Exchange forces

Correct Answer :

D. Exchange forces


Related Questions

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Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called

A. Carbon Monoxide

B. Phosgene

C. Phosphine

D. None of these

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Nitrification means

A. Conversion of nitrogen to nitric acid.

B. Production of nitrogen from air

C. Convert the atmospheric nitrogen to effective nitrogen compound.

D. Liquifaction of nitrogen

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4

What is the unit for measuring the pitch or frequency of sound ?

A. Coulomb

B. Hum

C. Cycles

D. Decible

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4

The Panda belongs to the same family as that of

A. Cat

B. Bear

C. Rabbit

D. Dog

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Permanent hardness of water can be removed by adding

A. Potassium Permanganate

B. Bleaching Powder

C. Chlorine

D. Washing Soda

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Which of the following is the lightest metal ?

A. Mercury

B. Lithium

C. Lead

D. Silver

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Which of the following elements is non-radioactive?

A. Uranium

B. Plutonium

C. Thorium

D. Zirconium

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Which of the following characters is not shown by hydrogen

A. It burns in air to form water

B. It supports combustion

C. It readily combines with fluorine and chlorine

D. It combines with almost all metals forming hydrides

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According to Daltons atomic theory the smallest particle which can exist independently is

A. An atom

B. A cation

C. A molecule

D. An anion

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4

The major ingredient of leather is

A. Nucleic acid

B. Carbohydrate

C. Collagen

D. Polymer

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4

Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?

A. A piece of iron that is not a permanent magnet

B. The north pole of another permanent magnet

C. A positively charged glass rod

D. A negatively charged rubber rod

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4

The metal used in storage batteries

A. Zinc

B. Iron

C. Copper

D. Lead

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4

Water has maximum density at

A. 0°C

B. -4°C

C. 100°C

D. 4°C

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Epoxy resins is used as

A. Adhesives

B. Detergents

C. Insecticides

D. Moth repellants

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The property of a substance to absorb moisture from the air on exposure is called

A. Desiccation

B. Efflorescence

C. Deliquescene

D. Osmosis

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4

Earth's seasons are caused by which of the following?

A. The varying amount of sunspot activity

B. The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun

C. The earth's orbit around the sun as an exlipse rather than a circle

D. The rotation of during a 24-hour day

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4

Old-written material, which cannot be read easily can be read by

A. None of these

B. Ultraviolet rays

C. Infra Red rays

D. Cosmic Rays

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Which of the following is commonly called a polyamide ?

A. Orion

B. Terylene

C. Rayon

D. Nylon

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When a gas is turned into a liquid, the process is called

A. evaporation

B. condensation

C. sublimation

D. deposition

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The speed of light with the rise in the temperature of the medium

A. Increases

B. Remains unaltered

C. Drops sharply

D. Decreases

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The accumulation of stress along the boundaries of lithospheric plates results in which of the following?

A. Earthquakes

B. Magnetic reversals

C. Hurricanses

D. Increased deposition of deep-sea sediments

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4

The formula of Plaster of Paris is

A. 2CaSO4, H2O

B. CaSO4

C. CaSO4, 2H2O

D. 2CaSO4, 4H2O

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Which of the following is in liquid form at room temperature ?

A. Sodium

B. Cerium

C. Francium

D. Lithium

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4

Brass gets discoloured in air due to the presence of which gas in air

A. Carbon dioxide

B. Hydrogen Sulphide

C. Oxygen

D. Nitrogen

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4

The solar eclipse occurs when

A. the sun comes in between the moon and the earth

B. the moon comes in between the sun and the earth

C. the earth comes in the between the sun and the moon

D. None of the above

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Apparatus invented by Archimedes is :

A. Pulley

B. Microscope

C. Thermemoter

D. Barometer

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Bromine is

A. A Black solid

B. A red liquid

C. A highly inflammable gas

D. colourless gas insoluble in water

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Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

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4

The recent atomic weight scale is based on

A. 1H1

B. 1H2

C. 6C12

D. 8O16

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The element present in the largest amount in rocks and minerals is

A. Carbon

B. Hydrogen

C. Aluminium

D. Silicon