Hydrogen Test

Result

Hydrogen Test - 62

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following metals cannot evolve $$H_{2}$$ from acids or $$H_{2}O$$ or from its compounds?

A
Hg

B
Al

C
Pb

D
Fe

Solution

$$Hg$$ has greater reduction potential than that of $$H^+$$ and hence cannot displace hydrogen from acid.
Question 2
1 / -0

Enthalpy of vapourisation for water is $$186.5kJ$$ $${mol}^{-1}$$. The entropy change during vapourisation is _____ $$kJ{K}^{-1}{mol}^{-1}$$

A
$$0.5$$

B
$$1.0$$

C
$$1.5$$

D
$$2.0$$

Solution
Question 3
1 / -0

Which is correct order of BP of VA , VIA and VIIA hydrides:

A
$$SbH_3 > NH_3 > AsH_3 > PH_3$$

B
$$H_2 O > H_2 Te > H_2Se > H_2S$$

C
$$HF > HI > HBr > HCl$$

D
All correcct
Question 4
1 / -0

Industrially $$H_2O_2$$ is produced

A
By oxidation of 2 ethyl anthraquinone in and cyclic process

B
By partial oxidation of propane2 ol

C
Both

D
None

Solution
Question 5
1 / -0

Ionic hydride among following is

A
$$BeH_2$$

B
$$NH_2$$

C
$$CaH_2$$

D
$$CuH_2$$

Solution
Question 6
1 / -0

Match the following
Sr.No Column I Sr.No Column II
A. $$10$$ vol of $$H_2O_2$$ 1. Perhydrol
B. $$20$$ vol of $$H_2O_2$$ 2. $$5.358 N$$
C. $$30$$ vol of $$H_2O_2$$ 3. $$1.785N$$
D. $$100$$ vol of $$H_2O_2$$ 4. $$3.57N$$

A
A-3, B-4, C-2, D-1

B
A-1, B-2, C-3, D-4

C
A-1, B-3, C-2, D-4

D
A-4, B-2, C-3, D-1
Question 7
1 / -0

Which of the following will undergo hydride shift?

A

B

C

D
Question 8
1 / -0

Which of the following statement is false about $$H_2 O_2$$ ?

A
Acts both as oxidising and reducing agent

B
Pale blue liquid

C
Can be oxidised by $$O_3$$

D
Two $$O-H$$ bonds lie in same plane
Question 9
1 / -0

In $$O _ { 2 }$$ and $$H _ { 2 } O _ { 2 },$$ the $$O - O$$ bond lengths are $$1.21$$ and $$1.48\mathring { A } $$ respectively. In ozone, the average $$O - O$$ bond length is :

A
$$1.28\mathring { A } $$

B
$$1.18\mathring { A } $$

C
$$1.44\mathring { A } $$

D
$$1.52\mathring { A } $$

Solution
Question 10
1 / -0

Among $$CaH_2, NH_3, NaH$$ and $$B_2H_6$$, which are covalent hydrides?

A
$$NH_3$$ and $$B_2H_6$$

B
$$NaH$$ and $$CaH_2$$

C
$$NaH$$ and $$ NH_3$$

D
$$CaH_2$$ and $$B_2H_6$$

Solution

$$NH_3$$ and $$B_2H_6$$ are the covalent hydrides and $$CaH_2$$ and $$NaH$$ are the ionic hydride.
$$N$$ and $$B$$ form covalent hydride as they have high electronegativity and small size.

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Re-Attempt Weekly Quiz Competition

Sr.No	Column I	Sr.No	Column II
A.	$$10$$ vol of $$H_2O_2$$	1.	Perhydrol
B.	$$20$$ vol of $$H_2O_2$$	2.	$$5.358 N$$
C.	$$30$$ vol of $$H_2O_2$$	3.	$$1.785N$$
D.	$$100$$ vol of $$H_2O_2$$	4.	$$3.57N$$

Hydrogen Test - 62

Result

Hydrogen Test - 62

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Rank

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SHARING IS CARING

Question 1

Hg

Al

Pb

Fe

Solution

Question 2

$$0.5$$

$$1.0$$

$$1.5$$

$$2.0$$

Solution

Question 3

$$SbH_3 > NH_3 > AsH_3 > PH_3$$

$$H_2 O > H_2 Te > H_2Se > H_2S$$

$$HF > HI > HBr > HCl$$

All correcct

Question 4

By oxidation of 2 ethyl anthraquinone in and cyclic process

By partial oxidation of propane2 ol

Both

None

Solution

Question 5

$$BeH_2$$

$$NH_2$$

$$CaH_2$$

$$CuH_2$$

Solution

Question 6

A-3, B-4, C-2, D-1

A-1, B-2, C-3, D-4

A-1, B-3, C-2, D-4

A-4, B-2, C-3, D-1

Question 7

Question 8

Acts both as oxidising and reducing agent

Pale blue liquid

Can be oxidised by $$O_3$$

Two $$O-H$$ bonds lie in same plane

Question 9

$$1.28\mathring { A } $$

$$1.18\mathring { A } $$

$$1.44\mathring { A } $$

$$1.52\mathring { A } $$

Solution

Question 10

$$NH_3$$ and $$B_2H_6$$

$$NaH$$ and $$CaH_2$$

$$NaH$$ and $$ NH_3$$

$$CaH_2$$ and $$B_2H_6$$

Solution

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