EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Chemical Kinetics>GUJCET 2018>Q 3

EASY

GUJCET

IMPORTANT

Earn 100

The half-life period for a radioactive substance is $15$ minutes. How many grams of this radioactive substance is decayed from $50$ gram of substance after one hour?

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Important Questions on Chemical Kinetics

EASY

GUJCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Chemical Kinetics>GUJCET 2017>Q 4

The rate constant value for a reaction is

1.75 \times 10^{2} L^{2} {mol}^{- 2} \sec^{- 1} .

The half-life period

t_{1 / 2} \propto

_______.

EASY

GUJCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Chemical Kinetics>GUJCET 2018>Q 5

At

298 K

temperature the activation energy for the reaction

x_{2} + y_{2} \to 2 xy + 20 kJ

is

15 kJ .

What will be the activation energy for the reaction

2 xy \to x_{2} + y_{2} ?