12th Standard Syllabus & Materials

12th Standard

TN 12th English Poem - 6 - Incident of the French Camp Sample Question Papers Study Material - QB365 Set A

NEW

12th Standard

TN 12th English Prose - 6 - On the Rule of the Road Sample Question Papers Study Material - QB365 Set A

NEW

12th Standard

TN 12th English Prose - 5 - The Chair Sample Question Papers Study Material - QB365 Set A

NEW

12th Standard

TN 12th English Supplementary - 4 - The Midnight Visitor Sample Question Papers Study Material - QB365 Set A

NEW

12th Standard

TN 12th English Poem - 4 - Ulysses Sample Question Papers Study Material - QB365 Set A

NEW

12th Standard

TN 12th English Prose - 4 - The Summit Sample Question Papers Study Material - QB365 Set A

12th Standard English Medium Chemistry Subject p - Block Elements - II Book Back 1 Mark Questions with Solution Part - II

Published on: 01/06/2021

QB365 provides detailed and simple solution for every Book back Questions in class 12 Chemistry Subject. It will helps to get more idea about question pattern in every book back questions with solution.

Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

Questions + Answers key

Take MCQ Chemistry Test

QB365 Student Learing Managemnet System

Std: 12th Standard - Chemistry

chapter: - Book back Questions

Visit QB365-SLMS - https://www.qb365.in/slms/ Complete Questions and Answers

Questions:

Multiple Choice Question

5 x 1 = 5

P₄O₆ reacts with cold water to give _______.

(a)

H₃PO₃

(b)

H₄P₂O₇

(c)

HPO₃

(d)

H₃PO₄

On hydrolysis, PCl₃ gives________.

(a)

H₃PO₃

(b)

PH₃

(c)

H₃PO₄

(d)

POCl₃

In the brown ring test, brown colour of the ring is due to _______.

(a)

a mixture of No and NO₂

(b)

Nitroso ferrous sulphate

(c)

Ferrous nitrate

(d)

Ferric nitrate

Solid (A) reacts with strong aqueous NaOH liberating a foul smelling gas(B) which spontaneously burn in air giving smoky rings. A and B are respectively_________.

(a)

P₄(red) & PH₃

(b)

P₄(white) & PH₃

(c)

S₈ & H₂S

(d)

P₄(white) & H₂S

An element belongs to group 15 and 3^rdperiod of the periodic table, its electronic configuration would be_______.

(a)

1s² 2s² 2p⁴

(b)