All Courses
Get the App Signup / Login
Sign in Open App
NEET  >  Chemistry Class 12  >  Test: p-Block Elements - 1 Download as PDF

Test: p-Block Elements - 1


Test Description

25 Questions MCQ Test Chemistry Class 12 | Test: p-Block Elements - 1

Test: p-Block Elements - 1 for NEET 2023 is part of Chemistry Class 12 preparation. The Test: p-Block Elements - 1 questions and answers have been prepared according to the NEET exam syllabus.The Test: p-Block Elements - 1 MCQs are made for NEET 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: p-Block Elements - 1 below.
Solutions of Test: p-Block Elements - 1 questions in English are available as part of our Chemistry Class 12 for NEET & Test: p-Block Elements - 1 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 Test: p-Block Elements - 1 | 25 questions in 35 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 12 for NEET Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Test: p-Block Elements - 1 - Question 1
Save

Which among the following compound, nitrogen shows the oxidation state of +5?

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

N has +5 in HNO3. Oxidation state of O is -2 and H is +1.​

Test: p-Block Elements - 1 - Question 2
Save

Which among the following forms basic oxide?

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

As we move down the group metallic character increases so Bi is a metal thus its oxide is basic.

Test: p-Block Elements - 1 - Question 3
Save

In laboratory ammonia is prepared by heating

Detailed Solution for Test: p-Block Elements - 1 - Question 3

2(NH4Cl) + Ca(OH)2 → (CaCl)2 + 2(NH3) + 2(H2O)
Hence C is correct.

Test: p-Block Elements - 1 - Question 4
Save

Ammonia has a higher boiling point and is less volatile because of
Detailed Solution for Test: p-Block Elements - 1 - Question 4

NH3 undergo intermolecular hydrogen bonding and therefore it has higher boiling point compared to other hydrides of group 15.

Test: p-Block Elements - 1 - Question 5
Save

Which compound is used as the cooling liquid in refrigerators?
Detailed Solution for Test: p-Block Elements - 1 - Question 5

NH3  is used as cooling liquid in refrigerators.

Test: p-Block Elements - 1 - Question 6
Save

At what temperature white phosphorous changes to red phosphorous?
Detailed Solution for Test: p-Block Elements - 1 - Question 6

White phosphorus when heated to 300° C polymerization occurs and it changes to Red Phosphorus.

Test: p-Block Elements - 1 - Question 7
Save

  is the structure of
Detailed Solution for Test: p-Block Elements - 1 - Question 7

H3PO2  is Hypophosphorus acid

Test: p-Block Elements - 1 - Question 8
Save

Elements of which group are known as ore forming elements?
Detailed Solution for Test: p-Block Elements - 1 - Question 8

Maximum ores are of group 16 elemnts (O, S etc).

Test: p-Block Elements - 1 - Question 9
Save

Most metal oxides are
Detailed Solution for Test: p-Block Elements - 1 - Question 9

Metal oxides are basic and ionic in nature.

Test: p-Block Elements - 1 - Question 10
Save

The stability of hydrides of group 16 elements decreases in the order
Detailed Solution for Test: p-Block Elements - 1 - Question 10

As we move down the group bond length increases therefore stability of hydrides decreases. Order of bond length O-H < S-H < Se-H < Te-H.

Test: p-Block Elements - 1 - Question 11
Save

Formula of oleum is
Detailed Solution for Test: p-Block Elements - 1 - Question 11

Oleum is H2S2O7

Test: p-Block Elements - 1 - Question 12
Save

Which among the following does not exhibit positive oxidation state?
Detailed Solution for Test: p-Block Elements - 1 - Question 12

Fluorine is most electronegative element therefore can only gain electrons. Thus it only shows negative oxidation state.

Test: p-Block Elements - 1 - Question 13
Save

Which of the following is the strongest Lewis base?
Detailed Solution for Test: p-Block Elements - 1 - Question 13

Correct Answer :- D

  • Lewis bases need to be able to donate electrons. Fluorine is the most electronegative element in the halogens followed by chlorine, bromine and iodine. 
  • Due to fluorine being strongly electronegative, it draws the electron density towards itself which makes it difficult for nitrogen atom to donate its lone pair of electrons. So, NF is the least basic. This trend follows the strength of electronegativity of the halides. 
  • Since iodine is least electronegative, it is the most basic trihalide of nitrogen.

So, we have the trend, in decreasing order of basic strength:

NF3 < NCl3 < NBr3 < NI3

Test: p-Block Elements - 1 - Question 14
Save

Hydrogen sulphide reacts with lead acetate forming a black compound which reacts with hydrogen peroxide to form another compound. The colour of the compound is
Detailed Solution for Test: p-Block Elements - 1 - Question 14

PbS + H2O2 → PbSo4(white) + H2O

Test: p-Block Elements - 1 - Question 15
Save

Which of the following is thermally the most stable?
Detailed Solution for Test: p-Block Elements - 1 - Question 15

 

Stability of hydrides decreases down the group so most stable is H2O  

Test: p-Block Elements - 1 - Question 16
Save

Which of the following is prepared by cyanamide process?
Detailed Solution for Test: p-Block Elements - 1 - Question 16

CaNCN + 3H2O → CaCO3 + 2NH3

Test: p-Block Elements - 1 - Question 17
Save

Ozone can be detected by using
Detailed Solution for Test: p-Block Elements - 1 - Question 17

Ozone is detected by using Hg.

Test: p-Block Elements - 1 - Question 18
Save

Which of the following oxides reacts with both HCl and NaOH?
Detailed Solution for Test: p-Block Elements - 1 - Question 18

ZnO is an amphroteric oxide.

Test: p-Block Elements - 1 - Question 19
Save

Name the gas whose formula was established by Sorret?
Detailed Solution for Test: p-Block Elements - 1 - Question 19

Sorret established formula of ozone.

Test: p-Block Elements - 1 - Question 20
Save

Which colour is given by CuSO4 with ammonia?
Detailed Solution for Test: p-Block Elements - 1 - Question 20

Cu2+  + 4NH3 → [Cu (NH3)4]2+ (blue)

Test: p-Block Elements - 1 - Question 21
Save

Xenondifluoride is
Detailed Solution for Test: p-Block Elements - 1 - Question 21

CN = 0.5(V+M-C+A) For XeF2 CN = 5 so shape will be linear and structure will be trigonal pyramidal.

Test: p-Block Elements - 1 - Question 22
Save

A metal X on heating in nitrogen gas gives Y. Y on treatment with water gives a colourless gas which when passed through copper sulphate solution gives a blue colour. Y is
Detailed Solution for Test: p-Block Elements - 1 - Question 22

Mg3N2 reacts with water to evolve NH3. Which reacts with copper ion to form blue color complex.

Test: p-Block Elements - 1 - Question 23
Save

The reagent used to distinguish between H2O2 and O3 is:
Detailed Solution for Test: p-Block Elements - 1 - Question 23

H2O2 can decolorize the color of KMnO4

Test: p-Block Elements - 1 - Question 24
Save

When chlorine is passed through concentrated hot solution of KOH, the compound formed is
Detailed Solution for Test: p-Block Elements - 1 - Question 24

 

Cl2 on treatment with conc. Base form ClO3-

Test: p-Block Elements - 1 - Question 25
Save

Ammonia can be dried using
Detailed Solution for Test: p-Block Elements - 1 - Question 25

CaO is used to dry NH3

157 videos|385 docs|261 tests
Join Course
Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Use Coupon Code
Information about Test: p-Block Elements - 1 Page
In this test you can find the Exam questions for Test: p-Block Elements - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: p-Block Elements - 1, EduRev gives you an ample number of Online tests for practice
157 videos|385 docs|261 tests
Join Course
Download as PDF

Recommended Content

Recommended Tests

How to Prepare for NEET

Read our guide to prepare for NEET which is created by Toppers & the best Teachers

Download free EduRev App

Track your progress, build streaks, highlight & save important lessons and more!
© EduRev
Education Revolution
Follow Us