CBSE Class 12 Chemistry Representative Elements Worksheet

CBSE Class 12 Chemistry Worksheet - Representative Elements. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.

Representative Elements

1. In contrast to nitrogen, phosphorous shows distinct tendency for catenation. Why?

2. N2 is a gas while P4 is a solid. Justify.

3. Give reason why PH3 is a weaker base than NH3.

4. On being slowly passed through water PH3 forms bubbles while NH3 dissolves. Why is it so?

5. The H-M-H bond angle in hydrides of gp 15th decreases down the group. The thermal stability of hydrides follows the same patter. Justify.

6. How does PCl5 exist in gaseous, liquid and solid state?

7. PCl5 fumes in air, why?

8. Both NCl5 and BiCl5 do not exist. Give reason.

9. Hypophosphorous and is monoprotic. Justify giving structure.

10. Give reason why phosphoric acid is diprotic while orthophosphoric acid is triprotic.

Please click the link below to download full pdf file for CBSE Class 12 Chemistry Worksheet - Representative Elements. 



Click to View or Download pdf file
Click for more Chemistry Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Art Integrated Project work for classes 1 to 10

CBSE Board has decided to introduce Art-Integrated Project work for classes I to X to promote Art-Integrated Learning in schools to make teaching learning Competency-Based and joyful. As part of this, at least one Art-Integrated Project in each subject shall be taken...

Procedure for correction in Name and Date of Birth

Procedure for correction in Name and Date of Birth in CBSE records Name Change: Applications regarding changes in name or surname of candidates will be considered provided the changes have been admitted by the Court of law and notified in the Government Gazette before...

Class 10 Datesheet announced

CBSE has announced the date sheet for the remaining class 10 Board Exams, see dates below

Class 12 Board Exams Datesheet Announced

CBSE has announced the datesheet of the remaining class 12 board exams, see below:  

Board Exams Class 10 and Class 12 Datesheet 2020

CBSE has announced the datesheet for the remaining exams of class 10 and class 12 exams. The exams are going to start in July. The class 10 and 12th board exams will be conducted for the remaining 29 papers from July 1 to July 15, 2020, at various centers nominated by...

Studies Today