Test Details

Chemistry

Nov 30, 10:30 PM

65 minutes

Nov 30, 11:35 PM

60.0 marks

MCQ

60 questions

Nishu Yadav

I have 10 Years Of Teaching Experience In Few Prestigious school's like Delhi Public School and Meerut Public School. In the course of my career, I have been proud my students were able to secure good academic results in Maths & Science.

Class Details

Science And Math

ZEAL ACADEMY (class- 10)

Science And Math

"The Important Thing Is To Never Stop Questioning.......... And Hence, At Our Academy We Encourage A Students To Question More"

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Question Text

Question 2 :
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of :

Question 3 :
Which of the following reaction requires oxygen to be a reactant ?

Question 4 :
Which of the following is an example of the exothermic reaction ?

Question 5 :
A chemical reaction in which heat is evolved is called a/an:

Question 6 :
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 8 :
Which type of chemical decomposition reaction is the following reaction? $Cu(OH)_2\xrightarrow {heat} CuO+H_2O$

Question 10 :
Reaction of iron nails with copper sulphate solution is an example of ____________.

Question 13 :
$FeCl_3 + 3NaOH \rightarrow 3NaCl + Fe(OH)_3$ The reaction is an example of________.

Question 14 :
AB + CD $\rightarrow$ AD + BC The reaction is an example of _________.

Question 15 :
The substance that initially involved in a chemical reaction is called a reactant.

Question 17 :
A less reactive metal replaces a more reactive metal from its salt solution in water.

Question 19 :
In the reaction, $4Fe+3O_2\rightleftharpoons 4Fe^{3+}+6O^{2-}$ Which of the following statements is incorrect?

Question 24 :
On the basis of following features identify the correct option: I. This metal is not obtained in free state. II. This metal is obtained by electrolysis of their chlorides in molten state.

Question 25 :
Which one of them is more ionic $LiCl$ or $NaCl$ ?

Question 26 :
When an element of very low ionization potential reacts with an element of very high electron affinity, then :

Question 27 :
The attraction between molecules and salt, when a salt is dissolved in water molecules, is :

Question 29 :
An ore contains arsenic and antimony as impurities. How are they removed during the process of roasting?

Question 33 :
The complete loss of an electron of one atom to another atom with the consequent formation of electrostatic charges is said to be

Question 40 :
During extraction of metals, electrolytic refining is used to obtain pure metals. Material which will be used as anode, for refining of silver metal by this process, is:

Question 43 :
Which part of tooth, made up of calcium phosphate, is the hardest substance in the body?

Question 44 :
Four solutions A, B, C and D when tested with universal indicator showed pH as $4, 11, 7$ and $9$ respectively. Which one of the four solutions is neutral?

Question 46 :
Water of crystallization is the fixed number of water molecules chemically attached to a unit of a salt in its crystalline form.

Question 47 :
If $H^{+}$ion concentration of a solution is increasedby $10$ times, its $pH$ will :

Question 48 :
The acid present in the body of red ant is ________.

Question 49 :
The solution of bleaching powder in water is always a clear solution.

Question 58 :
Which of the following methods is adopted for preparing dilute solution of ${ H }_{ 2 }S{ O }_{ 4 }$?

Question 60 :
Assertion: pH of a neutral solution is always $7$. Reason: pH of a solution does not depend upon temperature.

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