NEET Exam  >  NEET Tests  >  Chemistry Class 12  >  31 Year NEET Previous Year Questions: The p-Block Elements - NEET MCQ

31 Year NEET Previous Year Questions: The p-Block Elements - NEET MCQ


Test Description

30 Questions MCQ Test Chemistry Class 12 - 31 Year NEET Previous Year Questions: The p-Block Elements

31 Year NEET Previous Year Questions: The p-Block Elements for NEET 2024 is part of Chemistry Class 12 preparation. The 31 Year NEET Previous Year Questions: The p-Block Elements questions and answers have been prepared according to the NEET exam syllabus.The 31 Year NEET Previous Year Questions: The p-Block Elements MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for 31 Year NEET Previous Year Questions: The p-Block Elements below.
Solutions of 31 Year NEET Previous Year Questions: The p-Block Elements questions in English are available as part of our Chemistry Class 12 for NEET & 31 Year NEET Previous Year Questions: The p-Block Elements solutions in Hindi for Chemistry Class 12 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt 31 Year NEET Previous Year Questions: The p-Block Elements | 60 questions in 120 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 12 for NEET Exam | Download free PDF with solutions
31 Year NEET Previous Year Questions: The p-Block Elements - Question 1

Bleaching powder is obtained by the action of chlorine gas and [1988]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 1

Cl2 gas reacts with drys laked lime, Ca (OH)2 at 40°C to give bleaching powder

31 Year NEET Previous Year Questions: The p-Block Elements - Question 2

Hypo is used in photography to [1988]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 2

Undecomposed AgBr forms a soluble complex with hypo

It is washed with water and the image is fixed

1 Crore+ students have signed up on EduRev. Have you? Download the App
31 Year NEET Previous Year Questions: The p-Block Elements - Question 3

Which of the following is a nitric acid anhydride?

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 3

31 Year NEET Previous Year Questions: The p-Block Elements - Question 4

Oxygen will directly react with each of th e following elements except [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 4

 (burns with blue light)

(burns with yellow light)

Chlorine does not react directly with oxygen.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 5

Bleaching powder reacts with a few drops of dilute HCl to give [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 5

Bleaching powder

31 Year NEET Previous Year Questions: The p-Block Elements - Question 6

Of the following hybrides which one h as the lowest boiling point ? [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 6

NH3 undergoes H-bonding and hence has the highest b.p. Among the remaining hydrides i.e. PH3, AsH3 and SbH3 the b.p. increases as the size of the element increases and hence the magnitude of the van der Waal’s forces of attraction increases. Thus, PH3 has the lowest b.p.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 7

Which of the following metal evolves hydrogen on reacting with cold dilute HNO3 ? [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 7

Magnesium and manganese are the metals that produce hydrogen with dilute nitric acid

31 Year NEET Previous Year Questions: The p-Block Elements - Question 8

Which one of the following compounds does not exist ?[1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 8

As Nitrogen does not have d-orbital in its valence shell its maximum covalency is 3 while in the case of other elements the maximum covalency is 5.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 9

Each of the following is true about white and red phosphorus except that they [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 9

Both white and red phosphorus are not soluble in CS2 only white P is soluble.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 10

When orthophosphoric acid is heated to 600°C, the product formed is [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 10

31 Year NEET Previous Year Questions: The p-Block Elements - Question 11

Which one has the lowest boiling point ?[1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 11

Due to the absence of H-bonding, PH3 has the lowest b.p. The boiling point of the Vth group hydrides is : BiH3 > SbH3 > NH3 > AsH3 > PH3

31 Year NEET Previous Year Questions: The p-Block Elements - Question 12

The gases respectively absor bed by alkaline pyrogallol and oil of cinnamon are [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 12

Alkaline pyrogallol absorbs O2 and oil of cinnamon absorbs O3.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 13

It is possible to obtain oxygen from air by fractional distillation because [1989]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 13

Air is liquified by making use of the jouleThomson effect (cooling by expansion of the gas). Water vapour and CO2 are removed by solidification. The remaining constituents of liquid air i.e., liquid oxygen and liquid nitrogen are separated by means of fractional distillation (b.p. of O2 = –183°C : b. P. of N2 = – 195.8°C).

31 Year NEET Previous Year Questions: The p-Block Elements - Question 14

Which of the following statements is not correct for nitrogen ? [1990]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 14

In case of nitrogen, d-orbitals are not available.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 15

The bleaching action of chlorine is due to [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 15

Bleaching action of chlorine is due to oxidation in presence of moisture. It is permanent

Colouring matter + | O | → colourless matter

31 Year NEET Previous Year Questions: The p-Block Elements - Question 16

Which would quickly absorb oxygen ? [1991, 92]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 16

Alkaline solution of pyrogallol absorbs oxygen quickly.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 17

Oleum is [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 17

Oleum is H2S2O7 ( H2SO4 + SO3) which is obtained by dissolving SO3 in H2SO4 and is called fuming sulphuric acid.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 18

Aqueous solution of ammonia consists of

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 18

Aqueous solution of ammonia is obtained by passing NH3 in H2O which gives NH4+ and OH ions.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 19

P2O5 is heated with water to give [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 19

P2O5 have great affinity for water. The final product is orthophosphoric acid.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 20

Basicity of orthophosphoric acid is [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 20

It is a tribasic acid all the three hydrogen atoms are ionisable. It forms three series of salts.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 21

PCl3 reacts with water to form [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 21

31 Year NEET Previous Year Questions: The p-Block Elements - Question 22

PH4I + NaOH forms [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 22

31 Year NEET Previous Year Questions: The p-Block Elements - Question 23

Pure nitrogen is prepared in the laboratory by heating a mixture of [1991]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 23

Pure nitrogen in the lab can be obtained by heating ammonium nitrate. Ammonium nitrate is not a stable compound it dissociate to give nitrogen.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 24

Which one of the following substance is used in the laboratory for fast drying of neutral gases?[1992]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 24

Phosphorus pentoxide has great affinity for water. It forms ortho phosphoric acid on absorbing water

It is thus used as a powerful dehydrating or drying agent.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 25

Number of electrons shared in the formation of nitrogen molecule is [1992]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 25

Nitrogen molecule is diatomic containing a triple bond between two N atoms,
Therefore, nitrogen molecule is formed by sharing six electrons.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 26

Sugarcane on reaction with nitric acid gives

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 26

Cane sugar is oxidised to oxalic acid

31 Year NEET Previous Year Questions: The p-Block Elements - Question 27

Nitrogen is relatively in active element because [1992]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 27

N2 molecule contains triple bond between N atoms having very high dissociation energy (946 kJ mol–1) due to which it is relatively inactive.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 28

H3PO2 is the molecular formula of an acid of phosphorus. Its name and basicity respectively are[1992]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 28

Hypophosphorous acid (HPA), or phosphinic acid, is a phosphorus oxyacid and a powerful reducing agent with molecular formula H3PO2. As it contains only one P-OH group, its basicity is one.

31 Year NEET Previous Year Questions: The p-Block Elements - Question 29

When chlorine is passed over dry slaked lime at room temperature, the main reaction product is

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 29

 

chloride reacts with dry slaked lime to form bleaching power.

the actual composition of bleaching power is

31 Year NEET Previous Year Questions: The p-Block Elements - Question 30

 In the manufacture of bromine from sea water, the mother liquor containing bromides is treated with[1992]

Detailed Solution for 31 Year NEET Previous Year Questions: The p-Block Elements - Question 30

Bromide in the mother liquor is oxidised to Br2 by Cl2 which is a stronger oxidising agent. 

View more questions
135 videos|348 docs|182 tests
Information about 31 Year NEET Previous Year Questions: The p-Block Elements Page
In this test you can find the Exam questions for 31 Year NEET Previous Year Questions: The p-Block Elements solved & explained in the simplest way possible. Besides giving Questions and answers for 31 Year NEET Previous Year Questions: The p-Block Elements, EduRev gives you an ample number of Online tests for practice

Top Courses for NEET

135 videos|348 docs|182 tests
Download as PDF

Top Courses for NEET