Teachoo MCQ Test

NCERT Exemplar MCQ Quiz

Preparing for CBSE

Chapter 1 Class 10 - Chemical Reactions and Equations | 7 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
Time remaining 504
Question 1 of 7
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Question 1 of 7
NCERT Exemplar
Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH , anhydrous \(\mathrm{CuSO}_4\) and NaCl were added to the beakers \(\mathrm{A}, \mathrm{B}\) and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B , whereas in case of beaker \(C\), the temperature of the solution falls. Which one of the following statement(s) is(are) correct?
(i) In beakers A and B , an exothermic process has occurred.
(ii) In beakers A and B , an endothermic process has occurred.
(iii) In beaker C exothermic process has occurred.
(iv) In beaker C endothermic process has occurred.
Select one option. Answers are shown after the test.
Question 2 of 7
NCERT Exemplar
Which of the following is not a physical change?
Select one option. Answers are shown after the test.
Question 3 of 7
NCERT Exemplar
In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?
Select one option. Answers are shown after the test.
Question 4 of 7
NCERT Exemplar
Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
(i) It is an endothermic reaction
(ii) It is an exothermic reaction
(iii) The pH of the resulting solution will be more than seven
(iv) The pH of the resulting solution will be less than seven
Select one option. Answers are shown after the test.
Question 5 of 7
NCERT Exemplar
The following reaction 
\(4 \mathrm{NH}_2(\mathrm{~g})+5 \mathrm{O}_2(\mathrm{~g}) \rightarrow 4 \mathrm{NO}(\mathrm{g})+6 \mathrm{H}_2 \mathrm{O}(\mathrm{g})\)
is an example of a 
(i) displacement reaction
(ii) combination reaction
(iii) redox reaction
(iv) neutralisation reaction
Select one option. Answers are shown after the test.
Question 6 of 7
NCERT Exemplar
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?
(i) Displacement reaction
(ii) Precipitation reaction
(iii) Combination reaction
(iv) Double displacement reaction
Select one option. Answers are shown after the test.
Question 7 of 7
NCERT Exemplar
Which of the following is(are) an endothermic process(es)?
(i) Dilution of sulphuric acid
(ii) Sublimation of dry ice
(iii) Condensation of water vapours
(iv) Evaporation of water
Select one option. Answers are shown after the test.