A. Time
B. The concentration of the reactant
C. Temperature
D. The concentration of the product
✅ The correct answer is option C.
Chemistry MCQs
When one hydrogen atom of an alkane is removed then it is called
A. Alkene
B. Alkyl
C. Aldehyde
D. Saturated hydrocarbon
✅ The correct answer is option B.
Colour of fluorescence produced by cathode rays depends upon
A. Temperature
B. Pressure
C. Volume
D. Composition of glass
✅ The correct answer is option D.
On increasing the temperature the rate of reaction increases mainly because
A. The activation energy of the reaction increases
B. The concentration of the reacting molecules increases
C. Collision frequency increases
D. None of these
✅ The correct answer is option C.
Alkanes are also known as
A. Saturated hydrocarbon
B. Unsaturated hydrocarbon
C. Paraffins
D. Both A & C
✅ The correct answer is option C.
Which one is not true about cathode rays?
A. 9.11×10-31 Kg
B. Cast shadow
C. Heat up the platinum foil
D. Cannot ionize
✅ The correct answer is option D.
-d[N2O5]/dt represents
A. The rate of formation of N2O5
B. The rate of decomposition of N2O5
C. Order of the reaction
D. None
✅ The correct answer is option B.
Sabatier Senderns reaction involve _________ in presence of Ni
A. Aalkene & H2
B. Alkene & O2
C. Alkene & N2
D. Alkyne & Cl2
✅ The correct answer is option A.
Positive rays are produced
A. By burning of gas
B. By cooling of the gas
C. By the bombardment of cathode rays on gas molecules
D. From anode like cathode rays produced from a cathode
✅ The correct answer is option C.
The value of activation energy is primarily determined by
A. Temperature
B. Effective collision
C. Concentration of reactants
D. Chemical nature of reactants and products
✅ The correct answer is option B.