Start Chemistry MCQs Quiz Test !
PPSC Exams Entry Test Question Answers
Q.1: Which specie has unpaired electrons in antibonding molecular orbitals——–?
- O2+2
- N2-2
- B2
- O2-2
B
Q.2: For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as———-?
- qp = qv
- qp < qv
- qp > qv
- qp = qv / 2
C
Q.3: Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is———?
- 2.0 x 10-10 mol dm-3
- 1.414 x 10-5 mol dm-3
- 1.0 x 10-10 mol dm-3
- 1.0 x 10-5 mol dm-3
B
Q.4: Which of the following solution has the highest boiling point ?
- 5.85% NaCl Solution
- 18.0 % glucose solution
- 6.0 % urea solution
- All have same boiling point
A
Q.5: Which of the following can be used in laptops ?
- Silver oxide battery
- Fuel cell
- Nickel cadmium cell
- Lead accumulator
C
Q.6: Which is the unit of (K) rate constant for zero order reaction ?
- s-1
- mol dm-3 s-1
- mol-1 dm3 s-1
- mol-2 dm6 s-1
B
Q.7: Alkenes are produced from dehalogenation of——–?
- dihalo alkane
- trihalo alkane
- vicinal dihalo alkane
- vicinal trihalo alkane
C
Q.8: In unsaturated hydrocarbons electrons favour———-?
- less reactivity
- addition reactions
- substitution reactions
- none
B
Q.9: Which one is Chloroform———?
- CH2Cl2
- CH3Cl
- CHCl3
- CCl4
C
Q.10: Which is used for artificial ripening of fruit ?
- ethane
- ethene
- ethyne
- methane
B