The p-Block Elements Test

Result

The p-Block Elements Test - 48

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following chalcogen does not make bonds with germanium?

A
Sulfur

B
Selenium

C
Tellurium

D
Polonium

Solution

Chalcogens are chemical elements in group 16 of the periodic table. Germanium bonds to all natural single chalcogens except polonium.
Question 2
1 / -0

Which molecule is relatively more stable?

A
$$O_2$$

B
$$H_2$$

C
$$Li_2$$

D
$$N_2$$

Solution

Nitrogen molecule ($$\displaystyle N_2$$) is relatively more stable. Each $$N$$ atom has completed its octet and there is a triple bond between two $$N$$ atoms. In other molecules, there is either a single bond or a double bond between two atoms. A triple bond is stronger than a single or double bond.
Question 3
1 / -0

Noble gases have __________ electron affinity.

A
high

B
low

C
zero

D
very low

Solution

Most elements want to have a complete electron shell with 8 electrons in the outtermost shel except 1st period. Since the Noble gases already have that perfect configuration so they have 0 affinity to electron.
Question 4
1 / -0

Which of the following is true regarding derivation of the name of chlorine?

A
The name of chlorine was derived from its color.

B
The name of chlorine was derived from the name of the place where it was found for the first time.

C
The name of chlorine was derived from the name of the scientist who discovered it.

D
The name of chlorine was derived from mythological character name.

Solution

The name of chlorine was derived from its colour. The Greek word 'chlors' means pale green which is the colour of chlorine.
Question 5
1 / -0

Why does one who drinks alcohol get tempted to drink more alcohol?

A
Because $$CO_2$$ increases in liver

B
Because formaldehyde increases in liver

C
Because amount of enzyme P-$$450$$ increases in liver

D
Because amount of disulphiram increases in liver

Solution

Because the amount of enzyme P-$$450$$ increases in the liver.
In the liver of alcohol drinkers, the amount of the P-$$450$$ enzyme increases, and thus, the person is tempted to drink more alcohol.
Question 6
1 / -0

Make the correct pairs for the following given X and Y. X contains substance and Y has method of manufacture:

X
Y
1. Extraction of Sulphur
p. Contact process
2. Production of Nitric acid
q. Frasch method
3. Production of Sulphuric acid
r. Haber's process
4. Production of Ammonia gas
s. Ostwald's process

A
$$(1- s), (2- r), (3- q), (4- p)$$

B
$$(1- r), (2- q), (3- s), (4-p)$$

C
$$(1-q), (2-s), (3-p), (4-r)$$

D
$$(1-s), (2-q), (3-r), (4-p)$$

Solution

Sulphur is extracted by the Frasch method.
It is extracted from deposits in Louisiana by this process.

Nitric acid is produced by Ostwald's process.
Ammonia is oxidized to $$\displaystyle NO$$.
$$\displaystyle NO$$ is further oxidised to $$\displaystyle NO_2$$
$$\displaystyle NO_2$$ is dissolved in water.

Sulphuric acid is produced by Contact process.
S is oxidized to $$\displaystyle SO_2$$ which is further oxidized to $$\displaystyle SO_3$$.
$$\displaystyle SO_3$$ is then dissolved in oleum and diluted.

Ammonia is produced by Haber's process.
It involves direct combination of $$\displaystyle N_2$$ gas with $$\displaystyle H_2$$ gas.

Hence, option $$C$$ is correct.
Question 7
1 / -0

$$N_2(g)+3H_2(g)\overset{773K}{\underset{200-300\ bar}{\longrightarrow}}2NH_3(g)+$$ heat

Which of the following works as a catalyst?

A
$$Al_2O_3$$

B
$$K_2O$$

C
$$Fe$$

D
$$V_2O_5$$

Solution

The Haber process for the manufacture of ammonia is carried out by mixing dihydrogen and dinitrogen gases in the ratio of $$3:1$$ by volume. This mixture is passed over iron catalyst at $$200-300$$ bar pressure and temperature of $$773\ K$$.
Question 8
1 / -0

When $$262\ g$$ of xenon (atomic mass $$= 131$$) reacted completely with $$152\ g$$ of fluorine (atomic mass $$= 19)$$, a mixture of $$XeF_{2}$$ and $$XeF_{6}$$ was produced. The molar ratio $$XeF_{2} : XeF_{6}$$ is :

A
$$1 : 2$$

B
$$1 : 4$$

C
$$1 : 1$$

D
$$1 : 3$$

Solution

$$\underset {\dfrac {262}{131}}{Xe} + \underset {\dfrac {152}{38}}{F_2} \rightarrow \underset {a\ mole}{XeF_{2}} + \underset {b\ mole}{XeF_{6}}$$

Let $$a$$ mole $$XeF_{2}$$ form and $$b$$ mole $$XeF_{6}$$ from.

Apply $$POAC$$,
$$a\times 1 + b\times 1 = 2 $$ ------- $$(1)$$
$$2a + 6b = 8$$ --------- $$(2)$$

After solving eq. $$(1)$$ and $$(2)$$
$$a = 1\ mole$$ and $$b = 1\ mole$$.
Question 9
1 / -0

The most abundant element in the earths crust by weight is:

A
$$Si$$

B
$$Al$$

C
$$O$$

D
$$Fe$$

Solution

The most abundant element in the earths crust by weight is oxygen.
Question 10
1 / -0

The gas produced from thermal decomposition of $$Pb(NO_3)_2$$ is:

A
oxygen

B
nitric oxide

C
ammonia

D
nitrogen

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Re-Attempt Weekly Quiz Competition

X	Y
1. Extraction of Sulphur	p. Contact process
2. Production of Nitric acid	q. Frasch method
3. Production of Sulphuric acid	r. Haber's process
4. Production of Ammonia gas	s. Ostwald's process

The p-Block Elements Test - 48

Result

The p-Block Elements Test - 48

Score

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Rank

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SHARING IS CARING

Question 1

Sulfur

Selenium

Tellurium

Polonium

Solution

Question 2

$$O_2$$

$$H_2$$

$$Li_2$$

$$N_2$$

Solution

Question 3

high

low

zero

very low

Solution

Question 4

The name of chlorine was derived from its color.

The name of chlorine was derived from the name of the place where it was found for the first time.

The name of chlorine was derived from the name of the scientist who discovered it.

The name of chlorine was derived from mythological character name.

Solution

Question 5

Because $$CO_2$$ increases in liver

Because formaldehyde increases in liver

Because amount of enzyme P-$$450$$ increases in liver

Because amount of disulphiram increases in liver

Solution

Question 6

$$(1- s), (2- r), (3- q), (4- p)$$

$$(1- r), (2- q), (3- s), (4-p)$$

$$(1-q), (2-s), (3-p), (4-r)$$

$$(1-s), (2-q), (3-r), (4-p)$$

Solution

Question 7

$$Al_2O_3$$

$$K_2O$$

$$Fe$$

$$V_2O_5$$

Solution

Question 8

$$1 : 2$$

$$1 : 4$$

$$1 : 1$$

$$1 : 3$$

Solution

Question 9

$$Si$$

$$Al$$

$$O$$

$$Fe$$

Solution

Question 10

oxygen

nitric oxide

ammonia

nitrogen

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