MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
CBSE
Class 10 Science
Chemical Reactions And Equations
Quiz 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Which of the following is/are a decomposition reaction(s)?
0%
\(2HgO\xrightarrow{Heat}2Hg+O_2\)
0%
All of these
0%
\(CaCO_3\xrightarrow{Heat}CaO+CO_2\)
0%
\(2H_2O\xrightarrow{Electrolysis}H_2+O_2\)
Which of the following statements is correct?
0%
All of these
0%
A chemical equation tells us about the atoms or molecules of the reactants and products involved in a reaction.
0%
A chemical equation tells us about the substances involved in a reaction.
0%
A chemical equation informs us about the symbols and formulae of the substances involved in a reaction.
Chemical reaction \(2Na+C1_2\rightarrow 2NaCI\) is an example of
0%
Combination reaction
0%
double displacement reaction
0%
decomposition reaction
0%
displacement reaction
The equation - \(Cu+xHNO_3\rightarrow Cu\left( No_3 \right) _2+yNO_2+2H_2O\) The value of x and y are –
0%
4 and 2
0%
3 and 5
0%
7 and 1
0%
8 and 6
Neutralization reaction is an example of –
0%
endothermic reaction
0%
oxidation
0%
exothermic reaction
0%
none of these
Which of the following statements is/are true
0%
A physical change is temporary and reversible.
0%
All of these
0%
A chemical change is permanent and irreversible.
0%
The total mass of the substance remains same in a chemical change.
When dilute hydrochloric acid is added to iron filling –
0%
chlorine gas and ferric hydroxide are produces.
0%
hydrogen gas and ferric chloride are produced.
0%
no reaction takes place.
0%
iron salt and water are produced.
Which of the following equations is not an example of single displacement reaction?
0%
\(Ca+CO_2\rightarrow CaCO_2\)
0%
\(2Na+2H_2O\rightarrow 2NaOH+H_2\)
0%
\(2KI+CI_2\rightarrow 2KCI+I_2\)
0%
\(2Al+Fe_2O_3\rightarrow AI_2O_3+23Fe\)
In the balanced equation – \(aFe_2O_3+bH_2\rightarrow cFe+dH_2O \) The value of a, b, c, d are respectively-
0%
1,1,2,3
0%
1,2,2,3
0%
1,1,1,1
0%
1,3,2,3
\(Zn\left( s \right) +H_2SO_4\left( aq \right) \rightarrow ZnSO_4\left( aq \right) +H_2\left( g \right)\) is an example of -
0%
Precipitation reaction
0%
evolution of gas
0%
endothermic reaction
0%
change in color
In the reaction \(xPb\left( NO_3 \right) 32\xrightarrow{Heat}yPbo+zNO_2+O_2\) , \(x\), \(y\) and \(z\) are-
0%
1,1,2
0%
2,2,4
0%
1,2,4
0%
4,2,2
Which of the following reactions is not balanced
0%
\(2NaHCO_3\rightarrow Na_2CO_3+H_2O+CO_2 \)
0%
\( 4NH_3+5O_2\rightarrow 4NO+6H_2O\)
0%
\(2Al+6H_2O\rightarrow 2Al\left( OH \right) _3+3H_2 \)
0%
\(2C_4H_{10}+120_2\rightarrow 8CO_2+10H_2O \)
In the reaction \(FeSO_4+x\rightarrow Na_2SO_4+Fe\left( OH \right) _2\), \(x\) is –
0%
\(NaOH\)
0%
\(H_2SO_4\)
0%
\(Na_2SO_4\)
0%
none of these
Which of the following equations is representing combination of two elements?
0%
\(SO_2+\text{1/}2O_2\rightarrow SO_3\)
0%
\(4Na+O_2\rightarrow 2Na_2O\)
0%
\(2Na+2H_2O\rightarrow 2NaOH+H_2\)
0%
\(CaO+CO_2\rightarrow CaCO_3\)
Match the columns
Column A
Types of chemical reaction
Column B
Chemical equations
(a) Combination reaction
(i) \(CaCO_3\xrightarrow{\Delta}CaO+CO_2\)
(b) Decomposition reaction
(ii) \(2H_2O\xrightarrow{Electricity}2H_2+O_2\)
(c) Displacement reaction
(iii) \(CaO+CO_2\rightarrow CaCO_3\)
(d) Analysis reaction
(iv) \(Fe+CuSO_4\left( aq. \right) \rightarrow FeSO_4\left( aq \right) +Cu\)
0%
a(i), b(ii), v(iii), d(iv)
0%
a(ii), (b)(i), C(iv), d(iii)
0%
a(iii), b(i), c(iii), d(iv)
0%
a(iii), b(i), c(iv), d(ii)
Which of the following reactions is/are a double displacement reaction(s)? (i) \(AgNO_3+NaBr\rightarrow NaNO_3+AgBr\) (ii) \(BaCl_2+H_2SO_4\rightarrow BaSO_4+2HCl\) (iii) \(As_4O_4+3H_2S\rightarrow As_2S_3+3H_2O\) (iv) \(NaOh+HCI\rightarrow NaCI+H_2O\)
0%
only(iii)
0%
only (iv)
0%
(i) to (iv) all
0%
(i) and (ii)
A substance which oxidizes itself and reduces other is known as-
0%
a reducing agent
0%
Both of these
0%
None of these
0%
an oxidizing object
A redox reaction is one in which-
0%
acid is neutralized by the base
0%
both the substances are reduced.
0%
both the substances are oxidized
0%
one substance is oxidized, which the other is reduced
In the process of burning of magnesium in air, magnesium undergoes –
0%
oxidation
0%
all of these
0%
reduction
0%
sublimation
\(AgNO_3\left( a \right) +NACl\left( Aq \right) \rightarrow AgCl\left( s \right) +NaNO_3\left( Aq \right)\) Above reaction is a –
0%
double displacement reaction
0%
both Precipitation reaction and double displacement reaction
0%
Precipitation reaction
0%
Combination reaction
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
Answered
0
Not Answered
0
Not Visited
Correct : 0
Incorrect : 0
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page