Chemistry

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Chemistry Challenge Quiz

Test your knowledge of chemistry with our engaging quiz! Featuring 21 carefully curated questions, this quiz covers various topics from chemical reactions to the properties of elements.

Challenge yourself and learn something new today!

Multiple choice questions
Focus on fundamental chemistry concepts
Perfect for students and enthusiasts alike

21 Questions5 MinutesCreated by ExploringAtom42

Which information is not conveyed by a balanced chemical equation?

Physical states of reactants and products

Symbols and formulae of all the substances involved in a particular reaction

Number of atoms/molecules of the reactants and products formed

Whether a particular reaction is actually feasible or not

Which of the following gases can be used for storage of fresh sampel of an oil for a long time?

Carbon dioxide or oxygen

Nitrogen or helium

Helium or oxygen

Nitrogen or oxygen

The electrolytic decomposition of water gives H2 and O2 in the ratio of

1 : 2 by

2 : 1 by volume

8 : 1 by mass

1 : 2 by mass

In the decomposition of lead (II) nitrate to give lead (II) oxide, nitrogen dioxide and oxygen gas, the coefficient of nitrogen dioxide (in the balanced equation) is

We store silver chloride in a dark coloured bottle because it is

a white solid

Under goes redoc reaction

To avoid action by sunlight

None of the above

When crystals of lead nitrate are heated strongly in a dry test tube

Crystals immediately melt

A brown residue is left

White fumes appear in the tube

A yellow residue is left

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

The surface of metal becomes shining

The reaction mixture turns milky

Odour of a pungent smelling gas is recorded

A colourless and odourless gas is evolved

When carbon dioxide is passed through lime water,

calcium hydroxide is formed

White precipitate of CaO is formed

lime water turns milky

colour of lime water disappears.

In which of the following, heat energy will be evolved?

Electrolysis of water

Dissolution of NH4Cl in water

Burning of L.P.G.

Decomposition of AgBr in the presence of sunlight

Rancidity can be prevented by

adding antioxidants

Storing food away from light

keeping food in refrigerator

All of them

The reaction of H2 gas with oxygen gas to form water is an example of

Combination

Redox

Exothermmic

All of the above

The reaction in which two compound exchange their ions to form two new compounds is called

Double displacement

Displacement

Redox

Combination

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

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

An element X on exposure to moist air turns reddish-brown and a new compound Y is formed. The substance X and Y are

X = Fe, Y =fe2o3

X = Ag, Y = Ag2S

X = Cu, Y = CuO

X = Al, Y = Al2O3 Fe2O3

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