Which of the following is the most toxic gas...?

PPSC Past Papers

Latest MCQs

Which of the following is the most toxic gas...?

(A) Carbon dioxide

(B) Carbon monoxide

(C) Nitrogen

(D) Hydrogen

Comments

Latest MCQs

When an acid reacts with a metal, which one of the following gas is usually liberated...?

(A) Ammonia Gas

(B) Chlorine

(C) Oxygen

(D) Hydrogen gas

Comments

Latest MCQs

The process in which solid directly changes to gas is called...?

(A) Distillation

(B) Filtration

(C) Sublimation

(D) Crystallization

Comments

Latest MCQs

In the manufacture of Vanaspati Ghee/Banaspati Ghee which gas is used ...?

(A) Hydrogen

(B) Oxygen

(C) Nitrogen

(D) Carbon dioxide

Comments

Latest MCQs

Which gas can turn lime water milky...?

(A) O2

(B) NO2

(C) CO2

(D) N2

Comments

Latest MCQs

Mostly which gases found of the planet Jupiter...?

(A) Hydrogen

(B) Chlorine

(C) Hydrogen and Helium

(D) Neon

Comments

Latest MCQs

Which one of the following gases is readily soluble in water at room temperature...?

(A) Chlorine

(B) Nitrogen

(C) Ammonia

(D) Carbon dioxide

Comments

Latest MCQs

Period of extensive metabolic activity, in which cell grow, enzymes are synthesizes...?

(A) S phase

(B) M phase

(C) G2 phase

(D) G1 phase

Comments

Latest MCQs

In the human body, the lungs remove which gas from the blood...?

(A) Nitrogen

(B) Hydrogen

(C) Carbon Dioxide

(D) Argon

Comments

Latest MCQs

Which gas is used in preparation of Soda water...?

(A) Ammonia

(B) Hydrogen

(C) Nitrogen

(D) Carbon Dioxide

Comments

Latest MCQs

First antibiotic was extracted from a _________...?

(A) Bacteria

(B) virus

(C) Fungus

(D) None of these

Comments

Latest MCQs

Which of the following gases do plants and trees give out during photosynthesis...?

(A) Hydrogen

(B) Nitrogen

(C) Oxygen

(D) Carbon dioxide

Comments

Latest MCQs

Liquid can be converted into gas by...?

(A) Cooling

(B) Heating

(C) Both A and B

(D) None

Comments

Latest MCQs

During the process, more water will also evaporate and convert to a gaseous state of water called the...?

(A) Water Liquid

(B) Water Solid

(C) Water Vapour

(D) Water Ice

Comments

Latest MCQs

The antiparticle of an electronic is _______...?

(A) Positron

(B) Proton

(C) Alpha particular

(D) None of these

Comments

Latest MCQs

Which is not the property of gases...?

(A) Gases have definite volume

(B) Gases have Indefinite shape

(C) Gases have Indefinite volume

(D) Gases can be compressed

Comments

Latest MCQs

Thermal energy transfer required to change a liquid into gas without changing its temperature is called...?

(A) Latent heat of freezing

(B) Latent heat of vaporization

(C) Latent heat of boiling

(D) Latent heat of melting

Comments

Latest MCQs

As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what...?

(A) “coma” around the comet’s nucleus and a long tail that points away from the sun

(B) “coma” that points away from the sun and a long tail around the comet’s nucleus

(C) Only “coma” around the comet’s nucleus

(D) Only a long tail that points away from the sun

Comments

Latest MCQs

What happens when you put sand, salt and sawdust in glass of water...?

(A) Salt has dissolved in water

(B) Sand sank to the bottom

(C) Sawdust floated on the top

(D) All of these

Comments

Latest MCQs

Which of the following gas diffuses fastest...?

(A) Hydrogen

(B) Chlorine

(C) Fluorine

(D) Helium

Comments

Latest MCQs

The subatomic particles arriving from outer space having high energy are called...?

(A) Protons

(B) Electrons

(C) Cosmic rays

(D) None of the above

Comments

Latest MCQs

What are the three subatomic particles of an atom...?

(A) Protons,Neutrons & Electrons

(B) Protons,Nucleus & Electrons

(C) Protons,Nucleus & Elements.

(D) Elements,Nucleus & Protons

Comments

Latest MCQs

Brass gets discoloured in air because of the presence of which of the following gases in air ________ ...?

(A) Carbon dioxide

(B) Oxygen

(C) Nitrogen

(D) Hydrogen sulphide

Comments

Latest MCQs

Which metal is non toxic in nature...?

(A) Silver

(B) Iron

(C) Copper

(D) Gold

Comments

Latest MCQs

Atomic mass of an element is equal to ______...?

(A) Mass of protons and neutrons

(B) Mass of protons and electrons

(C) Mass of electrons and neutrons

(D) Mass of protons only

Comments

Latest MCQs

Sound travel faster in solid as compare to gases because of ______...?

(A) Gas molecules are packed loosely

(B) Sound does not travel faster through a solid than a gas

(C) Solid molecules are packed tightly

(D) Gas molecules move faster

Comments

Latest MCQs

Which of the following gas mainly responsible for ozone layer depletion...?

(A) Chlorofluorocarbon

(B) CO2

(C) Nitrogen oxide

(D) Sulphur dioxide

Comments

Latest MCQs

Which rays are trapped in our galaxy by magnetic waves...?

(A) Alpha rays

(B) Gamma rays

(C) Cosmic rays

(D) None of these

Comments

Latest MCQs

One of the following countries produces maximum energy from atomic reactors...?

(A) France

(B) USA

(C) UK

(D) none

Comments

Latest MCQs

Which gas is responsible for fermentation...?

(A) Carbon Dioxide

(B) Nitrogen

(C) Oxygen

(D) None

Comments

Latest MCQs

During global warming, the percentage of carbon dioxide has ______...?

(A) Remained unchanged

(B) Reduced in atmosphere

(C) Increased in atmosphere

(D) None of these

Comments

Latest MCQs

Volvox is a polyphyletic genus of _______...?

(A) Green algae

(B) Red algae

(C) Brown algae

(D) None of these

Comments

Latest MCQs

Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature...?

(A) Charles’ Law

(B) Avogadro’s Law

(C) Graham’s Law

(D) Boyle’s law

Comments

Latest MCQs

Cooking gas is mixture of which two gases...?

(A) Hydrogen and oxygen

(B) Methane and CO2

(C) Methane and oxygen

(D) None of these

Comments

Latest MCQs

Which Gas is used in the preparation of Soft drinks...?

(A) Oxygen

(B) Carbon dioxide

(C) Nitrogen

(D) Halogen

Comments

Latest MCQs

An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of an atom is...?

(A) 11

(B) 12

(C) 22

(D) 23

Comments

Latest MCQs

The toxicity of which of the following heavy metals leads to Liver cirrhosis...?

(A) Copper

(B) Lead

(C) Mercury

(D) Zinc

Comments

Latest MCQs

Matter changes state from solid to liquid and from liquid to gases, when it...?

(A) Loses energy

(B) Gains energy

(C) Remains same energy

(D) Has constant temperature

Comments

Latest MCQs

Which of the following is the most toxic gas...? Mcqs

PPSC Past Papers