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JEE Exam  >  JEE Tests  >  WBJEE Chemistry Test - 6 - JEE MCQ

WBJEE Chemistry Test - 6 - JEE MCQ


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30 Questions MCQ Test - WBJEE Chemistry Test - 6

WBJEE Chemistry Test - 6 for JEE 2024 is part of JEE preparation. The WBJEE Chemistry Test - 6 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Chemistry Test - 6 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Chemistry Test - 6 below.
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WBJEE Chemistry Test - 6 - Question 1
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NH₄Cl in liquid NH₃ will act as a/an :

Detailed Solution for WBJEE Chemistry Test - 6 - Question 1
The reaction between NH3 (weak base) and HCl (strong acid) forms NH4Cl. NH4+ acts as a weak acid and Cl- does not act like a base, same as NO3-. This means the salt will be weakly acidic.
WBJEE Chemistry Test - 6 - Question 2
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Phenols are more acidic than alcohols because

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WBJEE Chemistry Test - 6 - Question 3
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Which of the following does not turn Schiff's reagent to pink ?

WBJEE Chemistry Test - 6 - Question 4
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Fe(OH)₃ can be separated from Al(OH)₃ by the addition of
WBJEE Chemistry Test - 6 - Question 5
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Sometimes yellow turbidity appears while passing H₂S gas even in the absence of II group radicals. This is because of
WBJEE Chemistry Test - 6 - Question 6
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The energy of second Bohr orbit of the hydrogen atom is -328KJ mol⁻1. The energy of fourth Bohr orbit would be
WBJEE Chemistry Test - 6 - Question 7
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On hydrolysis of starch, we finally get
WBJEE Chemistry Test - 6 - Question 8
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Among the molecules (a)XeO₃ (b)XeOF (c)XeOF₆,those having same no. of lone pairs on Xe are
Detailed Solution for WBJEE Chemistry Test - 6 - Question 8

Thus, all the three have same no. of lone pair of electrons i.e. one.

WBJEE Chemistry Test - 6 - Question 9
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The heat of formation of CO₂ is -94 Kcal mol⁻1 whereas ∆H for 2CeO₂ → 2CO is -110.5 Kcal,The enthalpy of combustion carbon is
WBJEE Chemistry Test - 6 - Question 10
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The equilibrium constant for the following reaction will be 3 A + 2 B → C
WBJEE Chemistry Test - 6 - Question 11
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The most reactive nucleophile among the following is
Detailed Solution for WBJEE Chemistry Test - 6 - Question 11
Although due to +I effect of methyl groups, (CH3)2 CHO and (CH3)3 CO are stronger bases but due to steric hindrance both are weaker nucleophiles than CH3O
Further due to resonance, C6H5O is the weakest nucleophile
CH3O is most reactive (stronger) nucleophile
WBJEE Chemistry Test - 6 - Question 12
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A reaction with respect to the reactant A has a rate constant of 5 s⁻1. If we start with[A]= 10 mol-L⁻1, then in what time the concentration of A becomes 1.0 mol-L⁻1?
WBJEE Chemistry Test - 6 - Question 13
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In an electrochemical cell, if Eº is the EMF of the cell involving 'n' mole of electrons, then ∆Gº is
WBJEE Chemistry Test - 6 - Question 14
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Aspirin is an acetylation product of
WBJEE Chemistry Test - 6 - Question 15
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According to Lewis, the ligands are
WBJEE Chemistry Test - 6 - Question 16
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The number and type of bonds between two carbon atoms in calcium carbide are
WBJEE Chemistry Test - 6 - Question 17
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Electromagnetic separation is used in the concentration of
WBJEE Chemistry Test - 6 - Question 18
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A real gas most closely approaches the behaviour of an ideal gas at
WBJEE Chemistry Test - 6 - Question 19
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Thermite is a mixture of iron oxide and
WBJEE Chemistry Test - 6 - Question 20
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The important ore of lead is
WBJEE Chemistry Test - 6 - Question 21
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What are the products obtained when ammonia is treated with excess of chlorine ?
WBJEE Chemistry Test - 6 - Question 22
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Sodium sulphate is soluble in water but barium sulphate is insoluble because
WBJEE Chemistry Test - 6 - Question 23
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The isomers, which possess same structural formula, but differ in spatial arrangement of the group around the double bond, are called
WBJEE Chemistry Test - 6 - Question 24
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The radioisotope, tritium (3H₁) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg, how many miligrams of it would remain after 49.2 years ?
WBJEE Chemistry Test - 6 - Question 25
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In the sequence given below Z is
WBJEE Chemistry Test - 6 - Question 26
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The compound is used in the manufacture of terylene is
WBJEE Chemistry Test - 6 - Question 27
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Which of the following is a polyamide molecule?
WBJEE Chemistry Test - 6 - Question 28
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In which of the following reaction there is no change in oxidation number
WBJEE Chemistry Test - 6 - Question 29
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Which of the following statements is correct?
WBJEE Chemistry Test - 6 - Question 30
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Consider the following statements about enantiomers :
1. Isomers which are mirror images of each other are called enantiomers
2. A mixture of equal parts of enantiomers is called a racemic modification
3. Enantiomers show different properties-physical or chemical -only in a chiral medium
4. A racemic modification is converted by an optically active agent into mixture of diasteromers that can be separated.
Which of the above statements are correct ?
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