Chemistry Test 196

Result

Chemistry Test 196

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Weekly Quiz Competition

Question 1
4 / -1

A 0.1 M solution of which salt is most acidic?

A
NH₄C₂H₃O₂

B
NaCN

C
KNO₃

D
AlCl₃
Question 2
4 / -1

Which is the strongest acid amongst the following compounds?

A

B

C

D

Solution
Question 3
4 / -1

Select the correct order of metallic character :

A
P < Si < Be < Mg < Na

B
Be < P < Si < Mg <Na

C
P < Be < Si < Na < Mg

D
Si < P < Be < Mg < Na

Solution

As we move left to right metallic character decreases and as we move top to bottom metallic character increases, so correct is
Question 4
4 / -1

In hydrogen atom which transition produces a photon with highest energy?

A
n = 3 → n = 1

B
n = 5 → n= 3

C
n = 12 → n = 10

D
n = 22 → n = 20
Question 5
4 / -1

The correct basicity order of indicated atoms P, Q and R is -

A
R > Q > P

B
Q > P > R

C
P > R > Q

D
P > Q > R

Solution

Basicity order of indicated atoms P, Q, R is P > Q > R
Question 6
4 / -1

Select the incorrect statement regarding N^3–, O^2–, F^-, Na⁺ and Mg²⁺

A
All have same number of electron in valence shell.

B
Maximum energy required in their formation from their atomic state is for F^-.

C
N^3– have largest size among them.

D
Ionisation energy is maximum for Mg²⁺
Question 7
4 / -1

Dioxygen difluoride (O₂F₂) is a highly oxidising and unstable liquid. At 300 K it decomposes back to oxygen and fluorine, which are both gases at this temperature. The equation for the reaction is given below. 0.1 g of O₂F₂ was left for 24 hours and the 24.9 ml of gas mixture evolved was collected at 300 K and 100 kPa. What % by mass of dioxygen difluride has decomposed by this time?
O₂F₂(l) → O₂(g) + F₂(g)

A
70 %

B
35 %

C
25 %

D
15 %

Solution
Question 8
4 / -1

Which of the following cyclic dienes does not show geometrical isomerism?

A

B

C

D

Solution

Cyclohexene does not show

GeometricalIsomerism
Question 9
4 / -1

Which of the following property is different for two different isoelectronic homonuclear diatomic species?

A
Bond order

B
Magnetic behaviour

C
Bond length

D
Lone pairs
Question 10
4 / -1

In an analysis of solutions containing Barium ions (Ba²⁺), 50 ml of solution gave 0.233 g of BaSO₄ upon addition of sufficient sulphuric acid to precipitate all the Ba²⁺ ions present. What is concentration (in M) of Ba²⁺ ions in the solution.

A

B

C

D

Solution