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Xth sci quiz 1 eSmart Classes

Generate an image depicting a science educator explaining chemical reactions in a classroom setting, with visuals of test tubes, chemical compounds, and reactions being demonstrated.

Engaging Science Quiz

Test your knowledge of basic chemistry and scientific reactions with our engaging quiz! Perfect for students and science enthusiasts, this quiz will challenge your understanding of chemical reactions, properties of gases, and the behavior of common substances.

Get ready to explore:

Chemical reactions and their observations
Properties of gases evolved in reactions
Understanding of pH and litmus indicators

10 Questions2 MinutesCreated by RunningAtom521

Dilute hydrochloric acid is added to granulated zinc taken in a test tube. The following observations are recorded. Point out the correct observation.

Bubbles of colourless and odourless hydrogen gas is evolved.

The surface of metal becomes shining

The reaction mixture turns milky

Odour of a pungent smelling gas is recorded

On immersing an iron nail in CuSO4 solution for few minutes, you will observe that

No reaction takes place

The colour of solution fades away

The surface of iron nails acquire a black coating

The colour of solution changes to green

The colour of the precipitate formed when barium chloride solution is mixed with sodium sulphate solution is

Blue

Black

White

Green

What happens when ferrous sulphate crystals are heated?

A gas having the smell of burning sulphur is evolved

No gas is evolved

Brown coloured gas is evolved

Colourless and odourless gas is evolved

Which of the following will be required to identify the gas evolved when dilute hydrochloric acid reacts with zinc metal?

Red litmus paper

PH paper

Lime water

A burning splinter

When a magnesium ribbon is burnt in air, the ash formed is

Black

White

Yellow

Pink

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of

Helium

Neon

Argon

Krypton

How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?

Green to orange

Red to colorless

Orange to green

Blue to green

A solution turns red litmus blue, its pH is likely to be

Which one of the following types of medicines is used for treating indigestion?

Antibiotic

Analgesic

Antacid

Antiseptic

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