Test Details

Chemical

Chapter 1

Nov 09, 7:45 PM

45 minutes

Nov 09, 8:30 PM

40.0 marks

MCQ

40 questions

manish sahu

MTECH (IIT DELHI)

Class Details

Maths

10th

Maths

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Question Text

Question 1 :
State true or false. In a chemical equation, the products are written on the left-hand side and the reactants on the right-hand side with an arrow in between.

Question 2 :
The reaction of hydrochloric acid with zinc oxide to form zinc chloride and water is neutralization reaction. State whether the statement is true or false

Question 4 :
An oxidizing agent is always takes part in the reduction process while a reducing agent is always take part in the _______ process.

Question 5 :
The conversion of ${Cr}_{2}{O}_{7}^{2-}$ to ${Cr}^{3+}$ during a chemical reaction is an example of:

Question 9 :
$FeCl_3 + 3NaOH \rightarrow 3NaCl + Fe(OH)_3$ The reaction is an example of________.

Question 10 :
Which of the following reaction requires oxygen to be a reactant ?

Question 12 :
Aqueous solutions of magnesium chloride and silver nitrate are mixed to form solid silver chloride and aqueous magnesium nitrate. The balanced molecular equation contains which one of the following terms?

Question 13 :
Identify the type of reaction which will occur based on the information provided about the reactants: ${CH}_{4}(g)+{O}_{2}(g)\rightarrow$

Question 16 :
When chlorine reacts with sodium bromide the solution turns brown because ________.

Question 17 :
What is the difference between displacement over double displacement reactions ?

Question 19 :
Which of the following symbol is used to show solid precipitate?

Question 20 :
Reaction of iron nails with copper sulphate solution is an example of ____________.

Question 21 :
Balanced chemical equations imply which of the following? $I$. Numbers of molecules are conserved in chemical change $II$. Numbers of atoms are conserved in chemical change. $III$. Mass is conserved in chemical change.

Question 22 :
Which of the following is an example of the exothermic reaction ?

Question 24 :
A less reactive metal replaces a more reactive metal from its salt solution in water.

Question 26 :
AB + CD $\rightarrow$ AD + BC The reaction is an example of _________.

Question 27 :
Which type of chemical decomposition reaction is the following reaction? $Cu(OH)_2\xrightarrow {heat} CuO+H_2O$

Question 30 :
State true or false. In redox reactions, oxidation and reduction take place simultaneously.

Question 33 :
In the reaction, $4Fe+3O_2\rightleftharpoons 4Fe^{3+}+6O^{2-}$ Which of the following statements is incorrect?

Question 34 :
A chemical reaction in which heat is evolved is called a/an:

Question 35 :
$KXO_3$(s) well mixed with water, temperature of solution falls. This reaction is:

Question 37 :
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of :

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