Test Details

Chemical Reactions and Equations

Mcq

Dec 01, 7:00 PM

120 minutes

Dec 01, 9:00 PM

41.0 marks

MCQ

28 questions

Lata Paliwal

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Class Details

Science

10th

Science

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Question Text

Question 4 :
Reaction of iron nails with copper sulphate solution is an example of ____________.

Question 5 :
AB + CD $\rightarrow$ AD + BC The reaction is an example of _________.

Question 7 :
The substance that initially involved in a chemical reaction is called a reactant.

Question 8 :
Name the type of the following chemical reaction.$2KClO_3 \rightarrow 2KCl +3O_2$

Question 10 :
State true or false. In redox reactions, oxidation and reduction take place simultaneously.

Question 12 :
$KXO_3$(s) well mixed with water, temperature of solution falls. This reaction is:

Question 15 :
A less reactive metal replaces a more reactive metal from its salt solution in water.

Question 16 :
Exposure of silver bromide to sunlight for a long duration turns grey due to:

Question 19 :
When lead ($Pb$) is reacted with the hydrochloric acid a gas is evolved. Name the gas.

Question 22 :
Identify the product(s) which will be formed by using the information provided about the reactants. $NaCl(aq)+Ag{NO}_{3}(aq)\rightarrow$

Question 23 :
In a change hydrogen peroxide gives rise' to hydrogen oxide and oxygen. This is an example of:

Question 24 :
Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine. Identify the type of the reaction:

Question 26 :
Which of the following is (are) not an example of a decomposition reaction?

Question 27 :
Which of the following are combination reactions? (i)$2 \mathrm{KClO}_{3} \frac{\mathrm{Heat}}{\longrightarrow} 2 \mathrm{KCl}+3 \mathrm{O}_{2}$ (ii)$M g O+H_{2} o \rightarrow M g(O H)_{2}$ (iii)$4 A 1+3 O_{2} \rightarrow 2 A 1_{2} O_{3}$ (iv)$Z n+F e S O_{4} \rightarrow Z n S O_{4}+F e$

Question 28 :
When lead nitrate is heated, it breaks down into lead monoxide, nitrogen dioxide and oxygen as given below:$2Pb(NO_3)_2\rightarrow 2PbO+4NO_2+O_2$ The above reaction is an example of :

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