Class 12th Chemistry Objective , intermediate model paper, Chemistry Objective Answer Set, Bihar Board Class 12th
1 . The number of particles in a simple cubic per unit cell is :
One
two
three
four
| ANSWER:-One |
2. The number of particles in a face-centered cubic (fcc) per unit cell is
one
two
three
Four
| ANSWER:-Four |
3. The number of particles in a body-centered cubic (bcc) per unit cell IS :
one
Two
Three
Four
| ANSWER:-Two |
4. Graphite is an example of
- Ionic Solid
- Molecular Solid
- Covalent Solid
- Metallic Solid
| ANSWER:-Covalent Solid |
5. Possible Co-ordination number of Cation of tetrahedral structural Arrangement is:
- 1
- 2
- 3
- 4
| ANSWER:-4 |
6. The molecularity of a reaction cannot be :
- Zero
- One
- Two
- Three
| ANSWER:-Zero |
7. Cuprite is an ore of :
- Zn
- Cu
- Ag
- Fe
| ANSWER:-Cu |
8. Calamine is an ore of :
- Cu
- Fe
- Al
- Zn
| ANSWER:-Zn |
9. Bauxite is an ore of :
- Al
- Fe
- Cu
- Zn
| ANSWER:-Al |
12. Sulphide ores are generally concentrated by :
- Gravity separation method
- Magnetic separation method
- Froth floatation process
- None of these
| ANSWER:- Froth floatation process |
11. Haematite is an ore of :
- Al
- Fe
- Cu
- Zn
| ANSWER:-Fe |
12. Unit Of rate constant for Second-order reaction, K is :
- s⁻¹
- mol⁻¹ L s⁻¹
- mol⁻² L² s⁻¹
- mol L⁻¹ s⁻¹
| ANSWER:-mol⁻¹ L s⁻¹ |
13. Unit Of rate constant for First-order reaction, K is :
- s⁻¹
- mol⁻¹ L s⁻¹
- mol⁻² L² s⁻¹
- mol L⁻¹ s⁻1
| ANSWER:-s⁻¹ |
14. Unit Of rate constant for third-order reaction, K is :
- s⁻¹
- mol⁻¹ L s⁻¹
- mol⁻² L² s⁻¹
- mol L⁻¹ s⁻¹
| ANSWER:-mol⁻² L² s⁻¹ |
15. When nitroethane is treated with Li Al H4 the product formed is :
- Methyl amine
- Ethyl amine
- Ethane
- Acetamide
| ANSWER:- Ethyl amine |
16. Aldehyde and ketone can be distinguished by :
- Tollen’s reagent
- LiAIH4
- HCN
- None of these
| ANSWER:- Tollen’s reagent |
17. Among the halogen acids the one which is weakest is :
- HBr
- HI
- HF
- HCI
| ANSWER:-HF |
18. Which of the following is artificial sweetening agent :
- Aspartame
- Seconal
- Aspirin
- Sodium benzoate
| ANSWER:-Aspartame |
19. Acid chloride is reduced to aldehyde by :
- wurtz reaction
- Fittig reaciton
- Rosenmund reduction
- None of these
| ANSWER:-Rosenmund reduction |
20. Tollen’s reagent is:
- Mixture of CuSO4 and NaOH
- A solution of copper sulphate, sodium citrate and sodium carbonate
- Ammonical silver nitrate solution
- None of these
| ANSWER:-A solution of copper sulphate, sodium citrate and sodium carbonate |
21. Phenol is less acidic than:
- Ehanol
- Methanol
- p-Nitrophenol
- p- methylphenol
| ANSWER:- p-Nitrophenol |
22. The hybridization of Xe F2 Is :
- sp³d²
- sp³d
- sp³
- sp³d³
| ANSWER:-sp³d |
23. The hybridisation of Xe F4 Is :
sp³d²
s³d
sp³
sp³d³
| ANSWER:-. sp³d² |
24. Which one of the following is not a protein:
- Nail
- DNA
- Hair
- Wool
| ANSWER:- DNA |
25. Enzymes are:
- Carbohydrates
- Vitamins
- Proteins
- None of these
| ANSWER:- Proteins |
26. Vitamin A is Called
- Retinol
- Ascorbic acid
- calciferol
- Tocoferol
| ANSWER:- Retinol |
27. which of the Following is not found in RNA
- Uracil
- Adenine
- Ammonium Acetate
- Guanineetate
| ANSWER:-Ammonium Ac |
28. PVC is a
- Addition polymer
- Condensation polymer
- copolymer
- None of these
| ANSWER:-Addition polymer |
29. Phenol is used as :
- Antiseptic
- Disinfectants
- Both a & b
- None
| ANSWER:-Both a & b |
30. Antipyretics is a :
Quinone
Paracetamol
Luminal
None
| ANSWER:- Paracetamol |
Bihar Board 12th Chemistry Objective Answer Key 2021
In Bihar Board Intermediate and intermediate Exams, the Bihar Board has launched a new objective type scheme. Now, for each subject, it conducts both an Objective and a Subjective Paper. It currently has a Chemistry Objective Paper from the Bihar Board in which all Bihar Chemistry Objective Answer Key 2021 will be requested. These BSEB Inter Chemistry Exam 2021 Questions were asked from in between the Chapters. Let’s check the Bihar Board 12th Chemistry Objective Answer 2021 February. Also, we have given the link of Bihar Board Chemistry Answer Key 2021 Pdf.
बिहार बोर्ड केमिस्ट्री का सही अंसार सीट आपको यहाँ से मिलेगा 04/02/2021 को तो हमारे टीम के दोआरा आपको सबसे पहले देने का कोर्सिस रहेगा तो आपको बस एक कम करना लेफ्ट साईड में जो घंटी दिख रहा है उससे Allow कर लीजिये ताकि कल आने वाला सबसे पहले आपको मिले धन्वाद आपका दिन शुभ आप अच्छे से परीक्षा दे अच्छे नंबर से पास हो हम भगबान से आपके लिए दुआ मांगेंगे !!
Bihar Board Chemistry Objective Answer Key 2021
The examination is carried in the objective type so that students read each and every detail in chapters. Objective Type Papers contribute to gaining good subject knowledge. The examination is now closed. Check below BSEB Chemistry Objective Answer 2021. And for Bihar Board Chemistry Objective, you all have a single query Answer Key 2021 i.e. Type of objective paper. Exam participants can cross-check their answers here with the Bihar Board Chemistry Answer Key 2021 exam date Feb 2021.
Class 12th Chemistry Objective, Class 12th Chemistry Objective , Class 12th Chemistry Objective
Bihar Board 12th Chemistry Answer Key 2021 Page 1:
Bihar Board Answer Key Page 2:
BSEB Chemistry Answer Key 2021
Chemistry is a good subject for good mark scoring. Whatever your BSEB Exam performance will be, you don’t have to wait for the result now. Check the answer key for your Bihar board here. In Bihar Board Answer Key 2021, all questions are answered sequentially. Questions based on multiple choices were asked in various sets of papers. Here you will get all set wise Bihar SEB 12th Chemistry MCQ Answer Key 2021.
BSEB Exam Key Page 3:
♠ Bihar Board official answer key will be released within this week.
♠ Candidates Make Sure to be in touch with the Official Website.
♠ Bihar Board Chemistry Answer Key is Uploaded in the Image Here.
♠ If Students have any doubt over BSEB Intermediate Chemistry Answer 2021 for 1 to 35 Questions they can mention it in the comment box.
Answer Page 4:
Question Paper Key Page 5:
Exam Key Page 6:
Answer Sheet Page 7:
Bihar Board 12th Chemistry Objective Answer 2021 Question Paper
Answer Page 8:
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नोट:- बिहार बोर्ड इंटरमीडिएट के केमिस्ट्री आंसर कुंजी में किसी बे प्रकार की त्रुटि या बदलाव से सम्बंधित जानकारी आप हमसे कमेंट बॉक्स के माध्यम से साझा कर सकते हैं।
How to Download Bihar Board 12th Chemistry Answer Key 2021:
- Open the Official Website of BSEB i.e. www.biharboard.ac.in.
- Check Bihar Board Chemistry Objective Answer Key 2021 Pdf link.
- Choose Your Paper Code.
- Click on the Link and Pdf will Start Downloading Itself.
- Check Your Answers for Each Question.
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| IMPORTEND POST LINK | |
| 1. | 📔 Bihar board 12th result 2021 | BSEB Result 2021 l check high School result 2021 । Get intermediate result 2021 |
| 2. | 📔CBSE Syllabus for Class 12 for Academic Year 2020-2021 || allsarkariexams |
FAQ Bihar Board Class 12th Chemistry Objective Answer Set
Open the Official Website of BSEB i.e. www.biharboard.ac.in.
Check Bihar Board Chemistry Objective Answer Key 2021 Pdf link.
Choose Your Paper Code.
Click on the Link and Pdf will Start Downloading Itself.
Check Your Answers for Each Question.
