Test Details

Solutions, Chemical Kinetics and 13 other Topics

Class 12th Chemistry test

Jan 29, 7:30 PM

30 minutes

Jan 29, 8:00 PM

60.0 marks

MCQ

30 questions

Mayur Sir

Mayur Raj has completed B. Tech from Electrical Engineering and Now Pursuing BA- LLB . He is teaching from 2013 Now He has transformed teaching section for students or parents that deserve education.

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Class 12th

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Question Text

Question 1 :
Among paraffins, it is generally found that with an increase in molecular weight?

Question 3 :
Energy produced in a chemical reaction is a specific type of :

Question 5 :
A mixture of minerals in the earth's crust from which it is profitable to extract a metal is called:

Question 6 :
Among $K, Mg, Au$ and $Cu$, the one which is extracted by heating its ore in air is:

Question 7 :
Lower aldehyde and ketones attributed to the formation of  ______bonding with water molecules.

Question 8 :
A ketone has molar mass $86$. Which of the following cannot be IUPAC name of this ketone?

Question 9 :
A primary amine {B), on treatment with a solution of $AuCl_{3}$ in conc. $HCl$ yields a compound whose formula would be?

Question 11 :
The addition compounds which retain their identity in a solution are called:

Question 12 :
An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C, $38.71\%$ and H, $9.67\%$. The empirical formula of the compound would be?

Question 15 :
Antibodies are used to prevent bacterial growth. If this is true enter 1, if false enter 0.

Question 17 :
Some properties of sulphuric acid are listed below. Choose the role played by sulphuric acid as $A, B, C$ or $D$ which is responsible for the reaction (i) to (v). Some role/s may be repeated: $MgO + H_{2}SO_{4} \rightarrow MgSO_{4} + H_{2}O$

Question 19 :
Sulphuric acid converts ethyl alcohol to ethylene. In this process sulphuric acid works as:

Question 21 :
Transition metals are less reactive than alkali metals because they have:

Question 23 :
Two half-cells have potentials $-0.44$ and $0.799$ volt respectively. These two are coupled to make a galvanic cell. Which of the following will be true?

Question 24 :
Percentage of free space in cubic close packed structure and in body centred packed structure are respectively ___________.

Question 25 :
In the spinel structure, oxides ions are cubical-closest packed whereas $1/8th$ of tetrahedral voids are occupied by $A^{2+}$ cation and $1/2$ of octahedral voids are occupied by $B^{3+}$ cations. The general formula of the compound having spinel structure is

Question 27 :
In physisorption adsorbent does not show specificity for any particular gas because:

Question 28 :
Which of the following carbon-halogen bond is extremely  polar though nonionic among given alkyl halides?

Question 29 :
Salicylic acid, picric acid, aspirin, nylon and plastics have a common raw material, namely:

Question 30 :
When equal weights of methyl alcohol and ethyl alcohol react with excess of sodium metal the volume of $H_2$ liberated is more in the case of: 

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