The increasing order of reactivity of the following compounds towards reaction with alkyl halides directly is :
a) |
(A) < (C) < (D) < (B) |
b) |
(B) < (A) < (D) < (C) |
c) | (A) < (B) < (C) < (D) |
d) | (B) < (A) < (C) < (D) |
Correct Option: d
View SolutionThe hardness (in ppm) of a water sample containing is :
(molar mass of )
a) |
10 |
b) |
90 |
c) | 100 |
d) | 50 |
Correct Option: c
View SolutionThe pair of metal ions that can give a spin-only magnetic moment of 3.9 BM for the complex is :
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionThe standard electrode potential and its temperature coefficient
for a cell are 2 V and
at 300K respectively. The cell reaction is
The standard reaction enthalpy at 300 K in kJ mol -1 is ,
a) |
-412.8 |
b) |
-384 |
c) | 192 |
d) | 206.4 |
Correct Option: a
View SolutionThe correct order for acid strength of compounds
is as follows :
a) |
|
b) |
|
c) | d) |
Correct Option: d
View SolutionAmong the following four aromatic compounds, which one will have the lowest melting point ?
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: d
View SolutionAmong the following compounds most basic amino acid is :
a) |
Lysine |
b) |
Serine |
c) | Histidine |
d) | Asparagine |
Correct Option: a
View SolutionTwo solids dissociate as follows
The total pressure when both the solids dissociate simultaneously is :
a) |
(x + y) atm |
b) |
|
c) | d) |
|
Correct Option: d
View SolutionThe volume of gas A is twice than that of gas B. The compressibility factor of gas A is thrice than that of gas B at same temperature. The pressures of the gases for equal number of moles are :
a) |
|
b) |
|
c) | d) |
Correct Option: a
View SolutionThe major product of the following reaction is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: b
View SolutionThe major product of the following reaction is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: b
View Solution cannot be prepared by :
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionIn the following reaction
Aldehyde Alcohol
The best combination is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: b
View SolutionIn chemical reaction, , the initial concentration of B was 1.5 times of the concentration of A, but the equilibrium concentrations of A and B were found to be equal. The equilibrium constant (K) for the aforesaid chemical reaction is :
a) |
16 |
b) |
|
c) | 4 |
d) | 1 |
Correct Option: c
View SolutionWater samples with BOD values of 4 ppm and 18 ppm, respectively, are :
a) |
Clean and Highly polluted |
b) |
Highly polluted and Highly polluted |
c) | Clean and Clean |
d) | Highly polluted and Clean |
Correct Option: a
View SolutionThe element with Z = 120 (not yet discovered) will be an /a :
a) |
inner-transition metal |
b) |
transition metal |
c) | alkali metal |
d) | alkaline earth metal |
Correct Option: d
View Solution is an organometallic compound due to the presence of :
a) |
Mn-C bond |
b) |
Mn - Mn bond |
c) | Mn - O bond |
d) | C - O bond |
Correct Option: a
View SolutionThe molecule that has minimum/no role in the formation of photochemical smog, is :
a) |
|
b) |
|
c) | d) |
Correct Option: a
View Solution50 mL of 0.5 M oxalic acid is needed to neutralize 25 mL of sodium hydroxide solution. The amount (in g) of in 50 mL of the given sodium hydroxide solution is :
a) |
20 |
b) |
4 |
c) | 10 |
d) | 40 |
Correct Option: b
View SolutionDecomposition of X exhibits a rate constant of 0.05 . How many years are required for the decomposition of 5
of X into 2.5
?
a) |
25 |
b) |
40 |
c) | 20 |
d) | 50 |
Correct Option: d
View SolutionA metal on combustion in excess air forms X. X upon hydrolysis with water yields along with another product. The metal is :
a) |
Li |
b) |
Na |
c) | Mg |
d) | Rb |
Correct Option: d
View SolutionThe metal d-orbitals that are directly facing the ligands in are:
a) |
|
b) |
|
c) | d) |
Correct Option: c
View Solution is a copolymer of _____.
a) |
3-hydroxybutanoic acid and 4-hydroxypentanoic acid |
b) |
3-hydroxybutanoic acid and 3-hydroxypentanoic acid |
c) | 2-hydroxybutanoic acid and 3-hydroxypentanoic acid |
d) | 3-hydroxybutanoic acid and 2-hydroxypentanoic acid |
Correct Option: b
View SolutionFor a diatomic ideal gas in a closed system, which of the following plots does not correctly describe the relation between various thermodynamic quantities?
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionIn the following reactions, products A and B are :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: d
View SolutionWhat is the work function (in eV) of the metal if the light of wavelength generates photoelectrons of velocity
from it ?
(Mass of electron =
Velocity of light =
Planck's constant =
Charge of electron = )
a) | 0.9 | b) | 3.1 |
c) | 2.1 | d) | 4 |
Correct Option: c
View SolutionIodine reacts with concentrated to yield Y along with other products. The oxidation state of iodine in Y, is :
a) |
5 |
b) |
3 |
c) | 1 |
d) | 7 |
Correct Option: a
View SolutionIn the Hall-Heroult process, aluminium is formed at the cathode. The cathode is made out of :
a) |
Copper |
b) |
Platinum |
c) | Carbon |
d) | Pure aluminium |
Correct Option: c
View SolutionConsider the critical temperatures for the gaseous species given below
Gas | ||||
Critical Temperature (K) | 33 | 190 | 304 | 630 |
On the basis of data given above, predict which of the following gases show least adsorption on a definite amount of charcoal ?
a) |
|