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Test: Chemistry - 12
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45 Questions MCQ Test NEET Mock Test Series | Test: Chemistry - 12
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Test: Chemistry - 12 - Question 1
An alkylmagnesium halide reacts with water to give an alkane. In this reaction water acts as
Test: Chemistry - 12 - Question 2
The reactivity of the halogens towards methane decreases in the order
Test: Chemistry - 12 - Question 3
Which of the following statements is correct in relation to the halogenation of alkanes ?
Test: Chemistry - 12 - Question 4
Which of the following reactions will lead to the creation of two chiral centers in the product ?
in 
forms
Test: Chemistry - 12 - Question 6
1-Methylcyclohexene is allowed to react with 
The product is then treated with 
and NaOH. The reaction is 
The product formed is
The product is then treated with and NaOH. The reaction is The product formed is
Test: Chemistry - 12 - Question 7
By which of the following reactions can the conversion of cychlohexene (I) into 1,3-cyclohexadiene (III) be effected
Test: Chemistry - 12 - Question 8
Which of the following decolorizes the red-brown of a dilute solution of 
in water ?
in water ?
Test: Chemistry - 12 - Question 9
From which of the following hydrocarbons may hydrogen be displaced by a strongly electropositive
metal ?
metal ?
Test: Chemistry - 12 - Question 10
When propyne is treated with aqueous 
,the major product formed is
,the major product formed is
Test: Chemistry - 12 - Question 11
Consider the following reaction sequence
The products (A) and (B) are, respectively
The products (A) and (B) are, respectively
Test: Chemistry - 12 - Question 12
A hydrocarbon (A) is allowed to react with sodium amide and then with ethyl bromide to produce another hydrocarbon (B) which one ozonolysis produces propanoic acid only. The hydrocarbons (A) and (B) are, respectvely,
Test: Chemistry - 12 - Question 14
Which of the following hydrocarbons should be choosen as a starting material to prepare 3-hexanone by the hydration of the former ?
Test: Chemistry - 12 - Question 15
Chlorination of toluene in the presence of light and heat followed by treatement with aqueous NaOH and subsequently with dilute HCl gives
Test: Chemistry - 12 - Question 16
Among the compounds
the order of decreasing reactivity towards electrophilic substitution is
the order of decreasing reactivity towards electrophilic substitution is
in Fridel–Crafts reaction is to 
carbon is 
?
Test: Chemistry - 12 - Question 20
For the equilibrium 
If the equilibrium concentration of 
and 
is 
and 
respectively then the concentration of HCl is
If the equilibrium concentration of and is and respectively then the concentration of HCl is
Test: Chemistry - 12 - Question 21
In the reaction 
the value of the equilibrium constant depends on
the value of the equilibrium constant depends on
Test: Chemistry - 12 - Question 22
Consider the equilibrium, 
The equilibrium constant K is given by (when 
)
The equilibrium constant K is given by (when )
is present in a 2-L flask. The active mass of 
is 
Test: Chemistry - 12 - Question 25
For the eqilibrium, 
+14.6 kcal increase in temperature would
+14.6 kcal increase in temperature would
Test: Chemistry - 12 - Question 26
When 1 mole of ethanol is mixed with 1 mole of acetic acid, 0.67 mole of ethyl acetate is produced at equilibrium. Calculate 
for the reaction
for the reaction
Test: Chemistry - 12 - Question 27
During thermal dissoication, the observed vapour.......... 
is 26.0. Calculate the extent of
dissociation of
(g)
is 26.0. Calculate the extent ofdissociation of
(g)
Test: Chemistry - 12 - Question 28
When 
is heated in a closed vessel, 
gas is liberated and 
is left behind
,At equilibrium
is heated in a closed vessel, gas is liberated and is left behind,At equilibrium
the value of 
is 
M HCl solution is
Test: Chemistry - 12 - Question 31
The pH of a solution formed by maixing 40.0 mL of 0.1 M HCl with 10.0 mL of NaOH is
Detailed Solution for Test: Chemistry - 12 - Question 31
40ml of 0.1MHCl
(0.1/1000)×40
= 0.004 moles of HCl
Similarly, 10ml of 0.45MNaOH
= (0.45)/1000 × 10
= 0.0045 moles of NaOH
Thus, NaOH left unneutralised = 0.0005 moles in a volume of 50ml
Concentration of NaOH = (1000×0.0005)/50=0.01
= 10-2M
Therefore, [OH-]=10-2M or [H+]
= 10-12M or pH = 12.0
is
Test: Chemistry - 12 - Question 33
The solubility product of CuS, 
and HgS are 
, 
and 
respectively. The
solubilities of these suophides are in the order
and HgS are , and respectively. Thesolubilities of these suophides are in the order
Test: Chemistry - 12 - Question 34
When equal volumes of the following solutions are mixed, the precipitation of AgCl will occur only with (given 
of Agcl= 
)
of Agcl= )
Test: Chemistry - 12 - Question 35
For a weak monoprotic acid, the pH of a given concentration is calculated by the equation
is
Test: Chemistry - 12 - Question 38
Which of the following is arranged in order of increasing density ?
Test: Chemistry - 12 - Question 39
Which of the following alkali-metal hydroxides is the least soluble in water ?
being heated to 
gives 
reacts with 
to produce
Test: Chemistry - 12 - Question 44
Which of the following is arranged in order of decreasing solubility in water ?
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