Chemistry Test 127

Result

Chemistry Test 127

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Weekly Quiz Competition

Question 1
4 / -1

'X' is :-

A
HNO₃

B
O₂

C
O₃

D
KMnO₄
Question 2
4 / -1

Major product is :-

A

B

C

D

Solution
Question 3
4 / -1

Which of the following intermediate act as electrophile ?

A
Carbonium ion

B
Carbene

C
Carbanion

D
1 and 2 both
Question 4
4 / -1

PhMgBr + —→ Product (P) :-

A

B

C

D
Question 5
4 / -1

What is the product of 1, 4-addition in the reaction shown below ?

A

B

C

D
Question 6
4 / -1

If the shortest wavelength of H-atom in Lyman series is x, then longest wavelength in Balmer series of He⁺ is :-

A
9x / 5

B
36x / 5

C
x / 4

D
5x / 9

Solution
Question 7
4 / -1

For which of the following reactions is product formation favoured by low pressure and high temperature ?

A
H₂(g) + I₂(g)  2HI(g); ΔHº = –9.4 kJ

B
CO₂(g) + C(s)  2CO(g) ; ΔHº = 172.5 kJ

C
CO(g) + 2H₂(g)  CH₃OH ; ΔHº = –21.7 kJ

D
3O₂(g)  2O₃(g) ; ΔHº = 285 kJ

Solution
Question 8
4 / -1

How many milligrams of Au³⁺ ions are present in 1L saturated solution of gold (III) iodide ?

(K_sp = 2.7 × 10^–47 and atomic mass of Au = 197)

A
1.97 × 10^–7

B
1.97 × 10^–10

C
10^–12

D
10^–9

Solution
Question 9
4 / -1

Standard entropies of X₂, Y₂ and XY₃ are 60, 40 and 50 JK^–1 mol^–1 respectively. For the reaction XY₃, ΔH = –30 kJ to be at equilibrium, the temperature should be :-

A
500 K

B
750 K

C
1000 K

D
1250 K

Solution
Question 10
4 / -1

With hot and concentrated NaOH, Cl₂ gas gives :-

A
NaCl, NaClO

B
NaClO, NaClO₃

C
NaCl, NaClO₃

D
NaCl, NaClO₄

Solution

NaOH + Cl₂ NaCl + NaClO₃