GSEB English Medium Solutions for Class 10 Chemistry

GSEB Solutions for class 10 Subject & Chapters Wise :

Precipitation reactions produce insoluble …………. .

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Answer :

salts

Reactions in which energy is given out are known as …………. .

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Answer :

exothermic reactions

Reaction in which an element displaces another element from its compound is called …………. .

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Answer :

displacement reaction

Two antioxidants which are usually added to fat and oil containing foods to prevent rancidity, are …………., …………. .

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Answer :

BHA & BHT

…………. is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on their surface.

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Answer :

Corrosion

2 FeSO4 → Fe2O3 + SO2 + ………….

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Answer :

SO3

Na2SO4 + BaCl2 → …………. + 2NaCl

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Answer :

BaSO4

Complete the missing components/variables given as x and y in the following reactions:
(a) Pb (NO3)2 (aq) + 2KI (aq) → Pbl2 (x) + 2KNO3 (y)
(b) Cu (s) + 2AgNO3 (aq) → Cu (NO3)2 (aq) + x (s)

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Answer :

(a) x → (s); y → (aq);
(b) x → 2Ag

………….. is burnt in air to form magnesium oxide.

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Answer :

Magnesium

Respiration is an ………….. reaction.

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Answer :

exothermic

Zinc and lead are more reactive elements than …………..

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Answer :

copper

Any reaction that produces a ………….. is called a precipitation reaction.

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Answer :

Precipitate

Oxidation is the gain of ………….. or loss of …………..

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Answer :

oxygen, hydrogen

………….. are added to foods containing fats and oil.

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Answer :

Antioxidants

In rusting of iron, reddish brown coating formed on iron is …………..

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Answer :

Fe2O3

………….. can be retarded by storing foods away from light.

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Answer :

Rancidity

The oxidation and reduction reaction are also called ………….. Reactions.

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Answer :

redox

Magnesium is able to displace copper from copper sulphate solution because magnesium is ………….. reactive than copper.

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Answer :

more

Why doesn't a wall immediately acquire a white color when a coating of calcium hydroxide is applied on it?

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Answer :

Slaked lime as such is not very white. When applied on the wall, CO2 gas present in air reacts with calcium hydroxide to form calcium carbonate. It is quite white and therefore, imparts white look to the wall.
Ca(OH)2 + CO2(g) ———> CaCO3(s) + H2O(l).

What is rust?

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Answer :

It is a brown mass referred to as hydrated oxide. Its formula is Fe2O3.xH2O.

Identify the foremost reactive and least reactive metal: Al, K, Ca, Au.

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Answer :

Most reactive metal: K (potassium); Least reactive metal: Au (gold).

Which of the subsequent may be a combination reaction and which may be a displacement?
(a) Cl2 + 2KI ——–> 2KCl + I2
(b) 2K + Cl2 ——–> 2KCl.

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Answer :

(a) It is a displacement reaction,
(b) It is a combination reaction.

What is the difference between the subsequent two reactions?
(a) Mg + 2HCl ——–> MgCl2 + H2
(b) NaOH + HCl ——–> NaCl + H2O

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Answer :

(a) It is a single displacement reaction,
(b) it's a double displacement also called neutralization.

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Download GSEB English Medium Books For Class 10 - All Subjects

The GSEB Books for class 10 are designed as per the syllabus followed Gujarat Secondary and Higher Secondary Education Board provides key detailed, and a through solutions to all the questions relating to the GSEB textbooks.

The purpose is to provide help to the students with their homework, preparing for the examinations and personal learning. These books are very helpful for the preparation of examination.

For more details about the GSEB books for Class 10, you can access the PDF which is as in the above given links for the same.

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