SAT (Stage-2) Mock Test

Result

SAT (Stage-2) Mock Test - 55

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which of the following is an electrovalent compound?

A
CaO

B
H₂O

C
CCl₄

D
HF

Solution

Electrovalent (ionic) compounds are formed by complete transfer of electrons. The constituent particles in these compounds are ions. Metals combine with non-metals to form ionic compounds. For example: CaO
Question 2
1 / -0

The correct electronic configuration of oxygen atom, as per the quantum mechanics model, is:

A
1s⁴, 2s², 2p²

B
1s⁴, 2s⁴

C
1s², 2s², 2p⁴

D
1s², 2s², 3s², 3p²

Solution

For Oxygen:
Z = 8
Electronic configuration according to Bohr's model: 2, 6
The electronic configuration of oxygen atom, as per the quantum mechanics model, is: 1s², 2s², 2p⁴.
Question 3
1 / -0

Give the valency of the element with the electronic configuration: 1s², 2s², 2p¹.

A
1

B
3

C
2

D
4

Solution

The given element is Boron (Z = 5). There are 3 electrons in the valence shell and hence, the valency is 3.
Question 4
1 / -0

Observe the part of the periodic table shown below:

Group 14 Group 15

C N

Si P

Ge As

Identify the element having the smallest atomic radius.

A
N

B
C

C
Ge

D
As

Solution

The atomic radius increases down the group and decreases across the period.
Hence, among the given elements, nitrogen has the smallest atomic radius.
Question 5
1 / -0

Given below is a section of the periodic table:

A B

- -

Br

E

D

Select the most electronegative and the most metallic among the listed elements.

A
B is the most electronegative element.
A is the most metallic element.

B
B is the most electronegative element.
D is the most metallic element.

C
E is the most electronegative element.
A is the most metallic element.

D
E is the most electronegative element.
D is the most metallic element.

Solution

Electronegativity increases across the period and decreases down the group.
Hence, B is the most electronegative element.
Metallic character decreases across the period and increases down the group.
Hence, D is the most metallic element.

NOTE: The column containing Bromine is Group 17.
Hence, B is Fluorine.
D represents Polonium of group 16.
Question 6
1 / -0

The allotropic form of carbon known as charcoal

A
is amorphous

B
consists of micro-crystals of graphite

C
consists of micro-crystals of diamond

D
is lighter than water

Solution

There are two allotropic forms of carbon.
(1) Crystalline form: There are three crystalline forms of carbon: diamond, graphite and bucky ball.
(2) Amorphous form: There are various amorphous forms of carbon: coal, coke, charcoal, lampblack, gas carbon, etc.
Question 7
1 / -0

What is the common name of 2,2-Dimethyl propane?

A
Neobutane

B
Secondary butane

C
Neopentane

D
Isopentane

Solution

The common name of 2,2-Dimethyl propane is neopentane. It is a double-branched-chain alkane with five carbon atoms.
Question 8
1 / -0

Identify the correct statements regarding alloys.

I. Both bronze and brass are alloys of copper.
II. Besides lead, solder also contains copper.
III. Stainless steel does not contain any non metal.
IV. Duralumin also contains copper.

A
Both I and III

B
Both I and IV

C
Both II and III

D
Both III and IV

Solution

The composition of the mentioned alloys is as follows:
Brass is 70% copper and 30% zinc.
Bronze is 90% copper and 10% tin.

Solder is an alloy of lead and tin.
Stainless steel is 74% iron, 8% carbon and 18% chromium.

Duralumin is 93% aluminium, 3% copper, 3% magnesium and 1% manganese.
Hence, statements I and IV are correct.
Question 9
1 / -0

Directions For Questions

Consider the following statements regarding graphite.

I. It is an allotrope of carbon.
II. It is a good conductor of heat and electricity.
III. It can be artificially produced.

...view full instructions

Of these statements, which of the following are correct?

A
I, II and III are correct.

B
I and II are correct.

C
I and III are correct.

D
II and III are correct.

Solution

All the given statements are correct because graphite is an allotrope of carbon, which is a good conductor of heat and electricity and can also be produced artificially.
Question 10
1 / -0

Iron pipes are used for the transportation of water in homes and commercial places. Being in constant contact with water and oxygen, the pipes are prone to corrosion. Which of the following methods is adopted to prevent rusting or corrosion of water pipes?

A
Galvanisation

B
Electroplating with chromium

C
Painting

D
Greasing

Solution

Galvanising (electroplating with zinc) is the technique adopted to prevent the rusting of water pipes. Zinc, being more reactive than iron, reacts with the atmospheric oxygen to form a steady layer of oxide, which protects the metal below.
Question 11
1 / -0

Silver objects tarnish on exposure to air due to the formation of a layer of compound 'X' on its surface. Determine the compound 'X'.

A
Ag₂O

B
Ag₂S

C
Ag₂CO₃

D
AgNO₃

Solution

Silver reacts with H₂S gas in the air to form a layer of silver sulphide.
Question 12
1 / -0

During which of the following phases does DNA duplicate itself?

A
G1

B
Metaphase

C
S phase

D
G2

Solution

DNA doubles its content in the synthetic phase of the cell cycle.
Question 13
1 / -0

The connective tissue joining a bone with another bone is

A
fibrous, strong and flexible

B
elastic and flexible

C
elastic and weak

D
elastic and strong

Solution

Ligament joins a bone with another bone and is elastic and strong.
Question 14
1 / -0

Which one of the following options is a component of chlorophyll?

A
Iron

B
Manganese

C
Magnesium

D
Calcium

Solution

Chlorophyll is composed of mineral element magnesium. Chlorophyll is a term used for several closely related green pigments found in cyanobacteria and the chloroplasts of algae and plants.
Question 15
1 / -0

Which of the following is a synthetic plant hormone?

A
IAA

B
2,4-D

C
Gibberellic acid

D
Zeatin

Solution

2,4-D is a synthetic plant hormone. It is a synthetic auxin (plant hormone) and one of the most widely used herbicides in the world.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Group 14	Group 15
C	N
Si	P
Ge	As

SAT (Stage-2) Mock Test - 55

Result

SAT (Stage-2) Mock Test - 55

Score

-

Rank

-

SHARING IS CARING

Question 1

CaO

H2O

CCl4

HF

Solution

Question 2

1s4, 2s2, 2p2

1s4, 2s4

1s2, 2s2, 2p4

1s2, 2s2, 3s2, 3p2

Solution

Question 3

1

3

2

4

Solution

Question 4

N

C

Ge

As

Solution

Question 5

B is the most electronegative element. A is the most metallic element.

B is the most electronegative element. D is the most metallic element.

E is the most electronegative element. A is the most metallic element.

E is the most electronegative element. D is the most metallic element.

Solution

Question 6

is amorphous

consists of micro-crystals of graphite

consists of micro-crystals of diamond

is lighter than water

Solution

Question 7

Neobutane

Secondary butane

Neopentane

Isopentane

Solution

Question 8

Both I and III

Both I and IV

Both II and III

Both III and IV

Solution

Question 9

I, II and III are correct.

I and II are correct.

I and III are correct.

II and III are correct.

Solution

Question 10

Galvanisation

Electroplating with chromium

Painting

Greasing

Solution

Question 11

Ag2O

Ag2S

Ag2CO3

AgNO3

Solution

Question 12

G1

Metaphase

S phase

G2

Solution

H₂O

CCl₄

1s⁴, 2s², 2p²

1s⁴, 2s⁴

1s², 2s², 2p⁴

1s², 2s², 3s², 3p²

B is the most electronegative element.
A is the most metallic element.

B is the most electronegative element.
D is the most metallic element.

E is the most electronegative element.
A is the most metallic element.

E is the most electronegative element.
D is the most metallic element.

Ag₂O

Ag₂S

Ag₂CO₃

AgNO₃