Timed Challenge - Answer & Submit | GK Mania

1 What is the value of ∫₀^π x·sinx dx?

A) 0

B) π

C) 2π

D) 1

2 What is the equation of tangent to y² = 4ax at (at², 2at)?

A) y = x/t + at

B) ty = x + at²

C) y = tx + a

D) ty = x − at²

3 What is the maximum kinetic energy of photoelectrons if work function is 2 eV and photon energy is 5 eV?

A) 3 eV

B) 2 eV

C) 5 eV

D) 7 eV

4 If perimeter of equilateral triangle = 36, side?

A) 6

B) 9

C) 18

D) 12

5 What is the molar conductivity at infinite dilution for NaCl?

A) Λ°(Na⁺) − Λ°(Cl⁻)

B) Λ°(Na⁺) × Λ°(Cl⁻)

C) Λ°(Na⁺) + Λ°(Cl⁻) [Kohlrausch's law]

D) Cannot be determined

6 What is the IUPAC name of CH₃CH(OH)CH₃?

A) Butanol

B) Propan-1-ol

C) Propan-2-ol

D) Ethanol

7 What is the derivative of cos(x)?

A) −sin(x)

B) −cos(x)

C) cos(x)

D) sin(x)

8 Which gas is produced when HCl reacts with MnO₂?

A) O₂

B) H₂

C) Cl₂

D) CO₂

9 What is the term for a substance that speeds up a reaction without being consumed?

A) Solvent

B) Catalyst

C) Inhibitor

D) Reagent

10 What is the value of lim(x→0) (1−cosx)/x²?

A) 1/2

B) 2

C) 0

D) 1

Quiz

1 What is the value of ∫₀^π x·sinx dx?

2 What is the equation of tangent to y² = 4ax at (at², 2at)?

3 What is the maximum kinetic energy of photoelectrons if work function is 2 eV and photon energy is 5 eV?

4 If perimeter of equilateral triangle = 36, side?

5 What is the molar conductivity at infinite dilution for NaCl?

6 What is the IUPAC name of CH₃CH(OH)CH₃?

7 What is the derivative of cos(x)?

8 Which gas is produced when HCl reacts with MnO₂?

9 What is the term for a substance that speeds up a reaction without being consumed?

10 What is the value of lim(x→0) (1−cosx)/x²?

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Quiz

1 What is the value of ∫₀^π x·sinx dx?

2 What is the equation of tangent to y² = 4ax at (at², 2at)?

3 What is the maximum kinetic energy of photoelectrons if work function is 2 eV and photon energy is 5 eV?

4 If perimeter of equilateral triangle = 36, side?

5 What is the molar conductivity at infinite dilution for NaCl?

6 What is the IUPAC name of CH₃CH(OH)CH₃?

7 What is the derivative of cos(x)?

8 Which gas is produced when HCl reacts with MnO₂?

9 What is the term for a substance that speeds up a reaction without being consumed?

10 What is the value of lim(x→0) (1−cosx)/x²?

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Quiz Results