Chemical Kinetics MCQs for NEET — Chemistry Questions with Answers

Archeobacteria, also known as archaea, are extremophiles that can survive in extreme conditions, including high temperatures. They thrive in environments such as hot springs and hydrothermal vents, where temperatures can reach as high as 110 °C. Therefore, the correct answer is 'All of these' as archeobacteria can survive at 90 °C, 100 °C, and 110 °C.

rate doubles with every 10 degree celcius increase in temperature and decreases  by half with  decrease in 10 degree celcius 

Because dimension of invar does not vary with temperature.

Definition of the rate of reaction

the activation energy of the reaction is large

$ 0.2 \times 10 ^ {-4} $ $ { d [H_2 ] \over dt } = - 0.3 \times 10 ^ {-4} Ms^{-1} $ $ But Rate = - { 1 \over 3 } { d [ H_2 ] \over dt } = + { 1 \over 2 } { d [ NH_3 ] \over dt } $ $ Hence { d [NH_3 ] \over dt } = - { 2 \over 3} { d [H_2 ] \over dt }= - { 2 \over 3 } ( -0.3 \times 10 ^ {-4} ) = 0.2 \times 10 ^ {-4 } $

$ \triangle $ H of reaction

$ 0.012 atm min^{-1} $ $ - { d [N_2 O_4 \over dt } = + { 1 \over 2 } { d [NO_2 ] \over dt }$ $ - { (0.32 - 0.50 ) \over 30 } = 0.006 = { 1 \over 2} {d [NO_2 ] \over dt } $ $ \therefore { d [NO_2] \over dt } = 0.012 atm min^ {-1} $

$ K = K_1 / K_2 $

$ { 1 \over 6 } Rate = k [A] ^ {1/2} [A]^{1/3} [c] ^1 $ $ \therefore Order of reaction = { 1 \over 2 } + { 1 \over 3} + { 1 \over 1 } = { 11 \over 6 } $