WBJEE Chemistry Test - 8 - JEE MCQ
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30 Questions MCQ Test - WBJEE Chemistry Test - 8
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WBJEE Chemistry Test - 8 - Question 1
Identity the Bronsted acid in the following equation : PO₄3⁻(aq) + H₂O(1) → HPO₄2⁻(aq) + OH⁻(aq)
WBJEE Chemistry Test - 8 - Question 2
The compound 'A' when treated with methyl alcohol and few drops of H₂SO₄ give wintergreen smell. The compound 'A' is
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WBJEE Chemistry Test - 8 - Question 3
Which of the following does not turn Schiff's reagent to pink ?
WBJEE Chemistry Test - 8 - Question 5
A chloride dissolves appreciably in cold water. When placed on platinum wire in bunsen flame, no distinctive colour is noticed, the cation would be
WBJEE Chemistry Test - 8 - Question 7
The energy of a hydrogen atom in its ground state is -13.6eV. The energy of the level corresponding to the energy level equal to 5 is
WBJEE Chemistry Test - 8 - Question 10
Consider the following reaction occuring in a automobile engine
2C₈H₁₈(g) + 250₂(g) → 16CO₂ + 18H₂O(g)
the signs of ∆H,∆S and ∆G for above reaction would be
2C₈H₁₈(g) + 250₂(g) → 16CO₂ + 18H₂O(g)
the signs of ∆H,∆S and ∆G for above reaction would be
WBJEE Chemistry Test - 8 - Question 11
Which of the following factors will favour the reverse reaction in a chemical equilibrium?
WBJEE Chemistry Test - 8 - Question 12
The reaction A → B follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 hour. What is the time taken for conversion of 0.9 mole of A to produce 0.675 moles of B?
WBJEE Chemistry Test - 8 - Question 15
The dark blue colour of the solution formed when excess of ammonia is added to a solution of copper (II) sulphate is due to the presence of the ion :
WBJEE Chemistry Test - 8 - Question 16
Calculate enthalpy of formation of ethylene from the following data: 
WBJEE Chemistry Test - 8 - Question 18
A gas is said to behave like an ideal gas when the relation PV/T = consatnt. When do you expect a real gas to behave like an ideal gas ?
WBJEE Chemistry Test - 8 - Question 19
What happened when boron trichloride reacts with hydrogen at the temperature of 1270K?
WBJEE Chemistry Test - 8 - Question 22
When two ice cubes are pressed over each other, they unite to form one cube. Which of the following forces is responsible to hold them together?
WBJEE Chemistry Test - 8 - Question 25
Glyptal polymer is obtained from glycerol on reacting with
WBJEE Chemistry Test - 8 - Question 28
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
WBJEE Chemistry Test - 8 - Question 30
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 ?
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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