WBJEE Chemistry Test - 5 - JEE MCQ
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30 Questions MCQ Test - WBJEE Chemistry Test - 5
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WBJEE Chemistry Test - 5 - Question 1
Which of the following compounds possesses Lewis acid character ?
1. BF₃ 2. SiF₄ 3. PF₅
Select the correct answer using the codes given below :
WBJEE Chemistry Test - 5 - Question 2
R―CH₂―CH₂ ―OH can be converted into RCH₂CH₂COOH by the following sequence of steps
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WBJEE Chemistry Test - 5 - Question 3
Which of the following does not give red ppt. with Fehling solution?
WBJEE Chemistry Test - 5 - Question 4
A white crystalline substance dissolves in water. On passing H₂S in this solution, a black ppt. is obtained. The black ppt. dissolves completely in hot HNO₃. On adding a few drops of conc. H₂SO₄, a white ppt. is obtained. The ppt. is that of
WBJEE Chemistry Test - 5 - Question 5
The electronic configuration of metal M is 1s₂2s₂2p63s1. The formula of its oxide will be
WBJEE Chemistry Test - 5 - Question 6
Which of the following compound acts both nucleophile as well as an electrophile?
WBJEE Chemistry Test - 5 - Question 7
Which of the following ions has the maximum magnetic moment?
WBJEE Chemistry Test - 5 - Question 9
The enthalpy of formation for C2H4(g),CO2(g) and H2O(l) at 25ºC and 1 atm. pressure be 52,-394 and -286 kJ mol-1 respectively .The enthalpy of combustion of C2H4(g) will be
WBJEE Chemistry Test - 5 - Question 10
The equilibrium constant for the following reaction will be 3A + 2B → C
WBJEE Chemistry Test - 5 - Question 11
The amount of heat required to raise the temperature of a body temperature through 1ºC is called, its
WBJEE Chemistry Test - 5 - Question 12
The half life of a reaction is halved as the initial conc. of the reactant is doubled. The order of the reaction is
WBJEE Chemistry Test - 5 - Question 13
The substance used in the preparation of malachine green is
WBJEE Chemistry Test - 5 - Question 17
Electromagnetic separation is used in the concentration of
WBJEE Chemistry Test - 5 - Question 18
Which of the following reacts with BCl3 to form diborane?
WBJEE Chemistry Test - 5 - Question 19
50 ml of gas A diffuses through a membrane in the same time as for the diffusion of 40 ml of a gas B under identical pressure-temperature conditions. If molecular weight of A is 64 that of B would be
WBJEE Chemistry Test - 5 - Question 22
Total number of isomeric alcohols with formula C4H10O are :
WBJEE Chemistry Test - 5 - Question 26
Which of the following is formed by polymerisation of styrene in the presence of benzoyl peroxide?
WBJEE Chemistry Test - 5 - Question 28
Ionic solids with Schottky defects contain in their structure
WBJEE Chemistry Test - 5 - Question 29
The prefix D-in the notation for specific rotation of an optically active compound refers to :
WBJEE Chemistry Test - 5 - Question 30
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):Ether and alcohol are water soluble
Reason(R):Both Ether and alcohol can form stable H-bonds with H2O molecules.
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