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Test: The p-Block Elements - 2 - NEET MCQ


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30 Questions MCQ Test Chemistry Class 11 - Test: The p-Block Elements - 2

Test: The p-Block Elements - 2 for NEET 2024 is part of Chemistry Class 11 preparation. The Test: The p-Block Elements - 2 questions and answers have been prepared according to the NEET exam syllabus.The Test: The p-Block Elements - 2 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: The p-Block Elements - 2 below.
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Test: The p-Block Elements - 2 - Question 1

Which is incorrectly matched ?

Detailed Solution for Test: The p-Block Elements - 2 - Question 1


It is strictly covalent does not shows cationic & anionic form.

Test: The p-Block Elements - 2 - Question 2

H3PO2  (X) + PH3 ; is

Detailed Solution for Test: The p-Block Elements - 2 - Question 2

Test: The p-Block Elements - 2 - Question 3

Which of the following species is not a pseudohalide ?

Detailed Solution for Test: The p-Block Elements - 2 - Question 3

Pseudo halides are
CN-, NC-, OCN-, SCN-, SeCN-
NCS-, N3-, NCO-

Test: The p-Block Elements - 2 - Question 4

An orange solid (X) on heating , gives a colourless gas (Y) and a only green residue (Z). Gas (Y) treatment with Mg, produces a white solid substance...............

Detailed Solution for Test: The p-Block Elements - 2 - Question 4

Test: The p-Block Elements - 2 - Question 5

Conc. HNO3 is yellow coloured liquid due to

Detailed Solution for Test: The p-Block Elements - 2 - Question 5


Dissolved NO2 makes it yellow

Test: The p-Block Elements - 2 - Question 6

A gas at low temperature does not react with the most of compounds. It is almost inert and is used to create intent atmosphere in bulbs. The combustion of this gas is exceptionally an endothermic reaction Based on the given information, we can conclude that the gas is.

Detailed Solution for Test: The p-Block Elements - 2 - Question 6


N2 is higly stable due  and its combustion is endothermic whereas combustion of CO & H2 is exothermic.

Test: The p-Block Elements - 2 - Question 7

when chlorine gas is passed through an aqueous solution of a potassium halide in the presence of chloroform a violet colouration is obtained. On passing more of chlorine water, the violet colour is disappeared and solution becomes colourless. This test confirms the presence of ........ in aqueous solution.

Detailed Solution for Test: The p-Block Elements - 2 - Question 7

Test: The p-Block Elements - 2 - Question 8

H3OPO2  A  B  C

Compound (C) is

Detailed Solution for Test: The p-Block Elements - 2 - Question 8

Test: The p-Block Elements - 2 - Question 9

An explosive compound (A) reacts with water to produce NH4OH and HOCl. Then, the compound (A), is

Detailed Solution for Test: The p-Block Elements - 2 - Question 9

Test: The p-Block Elements - 2 - Question 10

An inorganic salt (A) is decomposed at about 523 K to give products (B) and (C). Compounds (C) is a liquid at room temperature and is neutral to limus paper while oxide (B) on burning with white phosphorous given a dehydrating agent (D). Compounds (A), (B), (C) and (D) will be identified as N2O.

Detailed Solution for Test: The p-Block Elements - 2 - Question 10

Test: The p-Block Elements - 2 - Question 11

An inorganic compound (A) made of two most occurring elements into the earth crust, having polymeric tetra-hedral net word structure. With carbon. compound (A) produces a poisonous gas (B) which is the most stable diatomic molecule. Compounds (A) and (B) will be

Detailed Solution for Test: The p-Block Elements - 2 - Question 11

SiO2 - sp3
sillica is most abundant in earthiness oxygen atom is sp3 hybridised.

Test: The p-Block Elements - 2 - Question 12

A sulphate of a metal (A) on heating evolves two gases (B) and (C) and an oxide (D). Gas (B) turns K2Cr2O7 paper green while gas (C) forms a trimer in which there is non S-S bond. Compounds (D) with HCl, forms a Lewis base (E) which exists as a dimer. Compounds (A), (B) (C) , (D) and (E) are respectively

Detailed Solution for Test: The p-Block Elements - 2 - Question 12

3SO3 → S3O9 (trimer)

Test: The p-Block Elements - 2 - Question 13

A tetra atomic molecule (A) on reaction with nitrogen (I) oxide, produces two substances (B) and (C) ,(B) is a dehyderating agent in its monometric form while substance (C) is a diatomic gas which shows almost intert behavior. The substances (A) and (B) and (C) respectively will be

Detailed Solution for Test: The p-Block Elements - 2 - Question 13

Test: The p-Block Elements - 2 - Question 14

First compound of intert gases was prepared by scientist Neil Barthleta in 1962. This compound is

Detailed Solution for Test: The p-Block Elements - 2 - Question 14

noble gas compound

Test: The p-Block Elements - 2 - Question 15

Carbon give has X% of CO2 and is used as an antidote for poisoning of Y. Then, X and Y are

Detailed Solution for Test: The p-Block Elements - 2 - Question 15

C + 2O2 → 2CO + CO2
1 mole

Test: The p-Block Elements - 2 - Question 16

The correct order of acidic strength of oxide of nitrogen is

Detailed Solution for Test: The p-Block Elements - 2 - Question 16

Fajan’s rule

Test: The p-Block Elements - 2 - Question 17

Nitrogen dioxide is dissolved in water to produce

Detailed Solution for Test: The p-Block Elements - 2 - Question 17

NO2 + H2O → HNO3 + HNO2
Mixed
anhydride

Test: The p-Block Elements - 2 - Question 18

Consider two reactions

I. Zn + conc. HNO3 (hot)  Zn(NO3)2 + X + H2O II. Zn + dil. HNO3 (cold) Zn(NO3)2 + Y + H2O

Compounds X and Y are respectively

Detailed Solution for Test: The p-Block Elements - 2 - Question 18

Zn + Conc HNO3 → Zn(NO3)2 + NO2 + H2O
Zn + dil. HNO3 →Zn(NO3)2 + N2O + H2O

Test: The p-Block Elements - 2 - Question 19

H3BO3  X  Y  B2O3

it T1 < T2 ten X and Y respectively are

Detailed Solution for Test: The p-Block Elements - 2 - Question 19

Boric acid is soluble in boiling water. When heated above 170 °C, it dehydrates, forming metaboric acid (HBO2):

H3BO3 → HBO2 + H2O

Metaboric acid is a white, cubic crystalline solid and is only slightly soluble in water. Metaboric acid melts at about 236 °C, and when heated above about 300 °C further dehydrates, forming tetraboric acid, also called pyroboric acid (H2B4O7):

4 HBO2 → H2B4O7 + H2O

The term boric acid may sometimes refer to any of these compounds. Further heating (to about 330 °C) leads to boron trioxide.

Hence A.

Test: The p-Block Elements - 2 - Question 20

Boron forms BX3 type of halides. The correct increasing order of Lewis - acid strength of these halides is

Detailed Solution for Test: The p-Block Elements - 2 - Question 20

BI3 > B Br3 > BCl3 > B F3
→ acidic Nature decreases due to back bonding

Test: The p-Block Elements - 2 - Question 21

Which one of the following compounds on strong heating evolves ammonia gas ?

Detailed Solution for Test: The p-Block Elements - 2 - Question 21

(NH4)2SO4 → NH3 + H2SO4
HNO3 → H2O + NO2 + O2
(NH4)2Cr2O7 → N2 + Cr2O3 + H2O
NH4NO3 → N2O + H2O

Test: The p-Block Elements - 2 - Question 22

The compound (SiH3)3N is

Detailed Solution for Test: The p-Block Elements - 2 - Question 22

Test: The p-Block Elements - 2 - Question 23

The correct order of acid strength of oxyacids of chlorine is

Detailed Solution for Test: The p-Block Elements - 2 - Question 23

Test: The p-Block Elements - 2 - Question 24

In a molecule of phosphorus (V) oxide, there are

Detailed Solution for Test: The p-Block Elements - 2 - Question 24

Test: The p-Block Elements - 2 - Question 25

The structures of O3 and N3_ are

Detailed Solution for Test: The p-Block Elements - 2 - Question 25

Test: The p-Block Elements - 2 - Question 26

When conc. H2SO4 was treated with K4[Fe(CN)6], CO gas was evolved. By mistake, somebody used dilute H2SO4 instead of conc. H2SO4 then the gas evolved was

Detailed Solution for Test: The p-Block Elements - 2 - Question 26

K4[Fe(CN)6] + H2SO4 + H2O → K2SO4 + FeSO4 + (NH4)2SO4 + CO
K4[Fe(CN)6] +dil.H2SO4 → K2SO4 + FeSO4 + HCN

Test: The p-Block Elements - 2 - Question 27

Compound (A) in pure form does not give ppt. with AgNO3 solution. A mixture containing 70% of (A) and 30% of ether is used as an anaesthetic. Compound (X) and (Y) are oxides while (Z) is a pungen smelling gas. (X) is a neutral oxide which turns cobalt chloride paper pink. Compound (Y) turns liime water milky and produces an acidic solution with water. Compounds (A), (X), (Y) and (Z) respectively will be

Detailed Solution for Test: The p-Block Elements - 2 - Question 27

CHCl3 + AgNO3 → No ppt.
used as anaesthetic
CHCl3 + O2 → H2O + CO2 + Cl2

Test: The p-Block Elements - 2 - Question 28

An inorganic white crystalline compound (A) has a rock salt structure (A) on reaction with conc. H2SO4 and MnO2, evolves a pungent smelling, greenish-yellow gas (B). Compound (A) gives white ppt. of (C) with AgNO3 solution. Compounds (A), (B) and (C) will be respectively

Detailed Solution for Test: The p-Block Elements - 2 - Question 28

Test: The p-Block Elements - 2 - Question 29

Compound (A) is

Detailed Solution for Test: The p-Block Elements - 2 - Question 29


Test: The p-Block Elements - 2 - Question 30

When oxalic acid reacts with conc. H2SO4, two gases produced are of neutral and acidic in nature respectively. Potassium hydroxide absorbs one of the two gases. The product formed during this absorption and the gas which gets absorbed are respectively

Detailed Solution for Test: The p-Block Elements - 2 - Question 30

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