Chemistry Test 99

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Chemistry Test 99

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Weekly Quiz Competition

Question 1
4 / -1

Graph between log (x/m) and log P is a straight line inclined at an angle of 45°. When pressure of 0.5 atm and log K = 0.699, amount of solute adsorbed per gram of adsorbent will be :

A
1 gm / g adsorbent

B
1.5 gm / g adsorbent

C
2.5 gm / g adsorbent

D
0.25 gm / g adsorbent
Question 2
4 / -1

Which of the following statements is not true for a lyophilic sol ?

A
It can be easily solvated

B
It carries no charge

C
The coagulation of this sol is reversible in nature

D
It is not stable
Question 3
4 / -1

An atom have three electrons in outermost shell and ns²np⁶nd¹⁰ configuration in penultimate shell. Select the INCORRECT about that atom -

A
p-block element

B
3^rd period element

C
13^th group element

D
Boron family element

Solution

atom can't be 3^rd period element as 3^rd period element can't have 3d-orbitals in it's penultimate shell
Question 4
4 / -1

2K₂MnO₄+O₃+H₂O→2KMnO₄+2KOH+O₂. In the above reaction O₃ acts as oxidising agent and the oxidised product obtained is :

A
O₂

B
OH^–

C
KMnO₄

D
Can't be predicted
Question 5
4 / -1

Which of the following is incorrect for f-block elements

A
For lanthanoids +3 is the most common oxidation state.

B
Lanthanoids have less tendency towards complex formation

C
Basic character of oxides of lanthanoids decreases on increasing atomic number

D
Neptunium does not exhibit +7 oxidation state.
Question 6
4 / -1

Suitable reagent to distinguish between glucose & fructose -

A
Tollen's test

B
Br₂/H₂O

C
Biuret test

D
2,4- DNP test
Question 7
4 / -1

α-amino acids can be identified by -

A
Tollen's reagent

B
NaSO₃H test

C
NinHydrin test

D
Molisch test
Question 8
4 / -1

If on a strand of DNA the base sequence is ATTGACGCAT then the sequence transcription on RNA would be -

A
UAACUGCGUA

B
AUUCUGCGUA

C
UAACTGCGUA

D
TAACTGCGTA

Solution

Thymine base of DNA is replaced by uracil in RNA

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Chemistry Test 99

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Chemistry Test 99

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Question 1

1 gm / g adsorbent

1.5 gm / g adsorbent

2.5 gm / g adsorbent

0.25 gm / g adsorbent

Question 2

It can be easily solvated

It carries no charge

The coagulation of this sol is reversible in nature

It is not stable

Question 3

p-block element

3rd period element

13th group element

Boron family element

Solution

Question 4

O2

OH–

KMnO4

Can't be predicted

Question 5

For lanthanoids +3 is the most common oxidation state.

Lanthanoids have less tendency towards complex formation

Basic character of oxides of lanthanoids decreases on increasing atomic number

Neptunium does not exhibit +7 oxidation state.

Question 6

Tollen's test

Br2/H2O

Biuret test

2,4- DNP test

Question 7

Tollen's reagent

NaSO3H test

NinHydrin test

Molisch test

Question 8

UAACUGCGUA

AUUCUGCGUA

UAACTGCGUA

TAACTGCGTA

Solution

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3^rd period element

13^th group element

O₂

OH^–

KMnO₄

Br₂/H₂O

NaSO₃H test