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WBJEE Chemistry Test - 15 - JEE MCQ


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40 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests 2024 - WBJEE Chemistry Test - 15

WBJEE Chemistry Test - 15 for JEE 2024 is part of WBJEE Sample Papers, Section Wise & Full Mock Tests 2024 preparation. The WBJEE Chemistry Test - 15 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Chemistry Test - 15 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Chemistry Test - 15 below.
Solutions of WBJEE Chemistry Test - 15 questions in English are available as part of our WBJEE Sample Papers, Section Wise & Full Mock Tests 2024 for JEE & WBJEE Chemistry Test - 15 solutions in Hindi for WBJEE Sample Papers, Section Wise & Full Mock Tests 2024 course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt WBJEE Chemistry Test - 15 | 40 questions in 60 minutes | Mock test for JEE preparation | Free important questions MCQ to study WBJEE Sample Papers, Section Wise & Full Mock Tests 2024 for JEE Exam | Download free PDF with solutions
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WBJEE Chemistry Test - 15 - Question 1

HCN behaves as a very weak acid in aqueous medium whereas it acts as a strong acid in liquid ammonia because :

WBJEE Chemistry Test - 15 - Question 2

Phenols are more acidic than alcohols because

WBJEE Chemistry Test - 15 - Question 3

Treatment of furfural with NaOH yields

WBJEE Chemistry Test - 15 - Question 4

A light greenish coloured salt was soluble in water. On passing H₂S into the solution, a black ppt. was obtained which dissolved readily in HCl. The metal ion present is

WBJEE Chemistry Test - 15 - Question 5

The energy of an orbit in a hydrogen atom is given by the relation
E = -(Constant/n2) kJ mol-1.
Which of the following properties represents the constant in the above relation?

WBJEE Chemistry Test - 15 - Question 6
Which of the following is not present in RNA?
WBJEE Chemistry Test - 15 - Question 7
When AgNO₃ is strongly heated, the products formed are
WBJEE Chemistry Test - 15 - Question 8
A σ - bond is
WBJEE Chemistry Test - 15 - Question 9

The state of hybridisation of boron and oxygen atoms in boric acid molecule (H₃BO₃) are respectively

WBJEE Chemistry Test - 15 - Question 10

If bond enthalpies of H-H,Br-Br and H-Br bonds are 433 ,192 and 364 KJ mol-1 respectively ,The ∆Hfor the reaction H₂(g) + Br₂(g) →2HBr(g) is

WBJEE Chemistry Test - 15 - Question 11
The equilibrium constant in a reversible chemical reaction at a given temperature
WBJEE Chemistry Test - 15 - Question 12
A reaction involving two different reactants can never be
WBJEE Chemistry Test - 15 - Question 13
For a system in equilibrium, ∆G=0, under conditions of constant
WBJEE Chemistry Test - 15 - Question 14
Vanishing creams differ from other creams due to the presence of
WBJEE Chemistry Test - 15 - Question 15
The number and type of bonds between two carbon atoms in calcium carbide are
WBJEE Chemistry Test - 15 - Question 16

The paramagnetic cation is

WBJEE Chemistry Test - 15 - Question 17
The right order of the solubility of sulphates of alkaline earth metals in water is
WBJEE Chemistry Test - 15 - Question 18

3.2 g of oxygen (At wt. = 16) and 0.2 g of hydrogen (At. wt. = 1) are placed in a 1.12 litre flask at 0oC. The total pressure of the gas mixture will be

WBJEE Chemistry Test - 15 - Question 19
Which metal is protected by a layer of its own oxide?
WBJEE Chemistry Test - 15 - Question 20
Optical glass contains a high precentage of
WBJEE Chemistry Test - 15 - Question 21
Orthophosphoric acid is
WBJEE Chemistry Test - 15 - Question 22
Hydrogen from HCl can be prepared by
WBJEE Chemistry Test - 15 - Question 23
Which of the following compound is optically inactive?
WBJEE Chemistry Test - 15 - Question 24
When a slow neutron goes sufficently close to a U-235 nucleus, then the process which takes place is called
WBJEE Chemistry Test - 15 - Question 25
A Beckmann rearrangement is affected by
WBJEE Chemistry Test - 15 - Question 26
Synthetic polymer which resemble natural rubber is
WBJEE Chemistry Test - 15 - Question 27
Copolymer is
WBJEE Chemistry Test - 15 - Question 28
A, B, C are three element forming a part of compound in oxidation states of +2, +5 and -2 respectively. What could be the compound?
WBJEE Chemistry Test - 15 - Question 29
The interionic distance for cesium chloride cystal will be
WBJEE Chemistry Test - 15 - Question 30
Consider the following statements about dimethyl cyclohexanes :
1. trans-1,2-dimethylcyclohexane is more stable than the corresponding cis-isomer
2. cis-1,3-dimethylcyclohexane is an optically inactive meso form
3. trans-1,3-dimethylcyclohexane is more stable than the corresponding cis-isomer
4. cis-1,2-dimethylcyclohexane is an unresolvable racemic mixture
Which of the statements given above are correct ?
WBJEE Chemistry Test - 15 - Question 31

In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-

Assertion(A): According to VSEPR theory, there shall be minimum repulsions among lone pairs and bond pairs present in a molecule or ion.

Reason(R): I3- , has a linear structure.

WBJEE Chemistry Test - 15 - Question 32

The hydrocarbon which can react with sodium in liquid ammonia is

WBJEE Chemistry Test - 15 - Question 33

Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid . The product so obtained is diazotised and then heated with cuprous bromide. Thr reaction mixture so formed contains

WBJEE Chemistry Test - 15 - Question 34

The half-life period of a first order chemical reaction is 6.93 minutes. The time required for the completion of 99% of the chemical reaction will be (log 2 = 0.301).

WBJEE Chemistry Test - 15 - Question 35

The IUPAC name of the compound

WBJEE Chemistry Test - 15 - Question 36

Which are ionic compounds?

WBJEE Chemistry Test - 15 - Question 37

The reagents , NH4Cl and aqueous NH3 will precipitate :

WBJEE Chemistry Test - 15 - Question 38

The correct statement(s) concerning the structures E, F and G is (are)

   

WBJEE Chemistry Test - 15 - Question 39

Which of the following alloys contain(s) Cu and Zn ?

WBJEE Chemistry Test - 15 - Question 40

Identify the correct statement of the followings?

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