Hi, friends on this page we are sharing the JAC 12th Chemistry Objective Questions and Answers PDF download link. This class 12 chemistry notes JAC is very useful for students studying at Jharkhand Board. This can be JAC important Question 2022, Chemistry MCQ Question Answer, Quiz.
Chemistry MCQs for Class 12 is very important for those students who want to score good marks in their board exam. Students who can practice Class 12 Chemistry multiple choice questions with answers to improve their scores in the board exams.
JAC 12th Chemistry Objective Questions and Answer
1. The number of particles in a simple cubic per unit cell is :
- One
- two
- three
- four
2. The number of particles in a face-centered cubic (fcc) per unit cell is
- one
- two
- three
- Four
3. The number of particles in a body-centered cubic (bcc) per unit cell IS :
- one
- Two
- Three
- Four
4. Graphite is an example of
- Ionic Solid
- Molecular Solid
- Covalent Solid
- Metallic Solid
5. Possible Co-ordination number of Cation of tetrahedral structural Arrangement is:
- 1
- 2
- 3
- 4
6. The molecularity of a reaction cannot be :
- Zero
- One
- Two
- Three
7. Cuprite is an ore of :
- Zn
- Cu
- Ag
- Fe
8. Calamine is an ore of :
- Cu
- Fe
- Al
- Zn
9. Bauxite is an ore of :
- Al
- Fe
- Cu
- Zn
10. Sulphide ores are generally concentrated by :
- Gravity separation method
- Magnetic separation method
- Froth floatation process
- None of these
11. Haematite is an ore of :
- Al
- Fe
- Cu
- Zn
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
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
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
15. When nitroethane is treated with Li Al H4 the product formed is :
- Methylamine
- Ethylamine
- Ethane
- Acetamide
16. Aldehyde and ketone can be distinguished by :
- Tollen’s reagent
- LiAIH4
- HCN
- None of these
17. Among the halogen acids the one which is weakest is :
- HBr
- HI
- HF
- HCI
18. Which of the following is an artificial sweetening agent :
- Aspartame
- Seconal
- Aspirin
- Sodium benzoate
19. Acid chloride is reduced to aldehyde by :
- Wurtz reaction
- Fitting reaction
- Rosenmund reduction
- None of these
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
21. Phenol is less acidic than:
- Ethanol
- Methanol
- p-Nitrophenol
- p- methyl phenol
22. The hybridization of Xe F2 Is :
- sp³d²
- sp³d
- sp³
- sp³d³
23. The hybridization of Xe F4 Is :
sp³d²
s³d
sp³
sp³d³
24. Which one of the following is not a protein:
- Nail
- DNA
- Hair
- Wool
25. Enzymes are:
- Carbohydrates
- Vitamins
- Proteins
- None of these
26. Vitamin A is Called
- Retinol
- Ascorbic acid
- calciferol
- Tocopherol
27. which of the following is not found in RNA
- Uracil
- Adenine
- Ammonium Acetate
- Guanine
28. PVC is a
- Addition polymer
- Condensation polymer
- copolymer
- None of these
29. Phenol is used as :
- Antiseptic
- Disinfectants
- Both a & b
- None
30. Antipyretics is a :
- Quinone
- Paracetamol
- Luminal
- None
अगर आपको यह लेख तथा JAC 12th Chemistry Objective Questions and Answers पसंद आया हो तो इसे शेयर जरूर करें। धन्यवाद!
- 12th Physics Objective Questions in Hindi
- 12th Physics Objective Questions in English
- 12th Chemistry Objective Questions in Hindi
- 12th Chemistry Objective Questions in English
- 12th Computer Science important Questions
- 12th Biology Objective Questions in Hindi
- 12th Economics important Questions Notes
Thank you so much it’s very helpful