Std 10 Social Science Ch-5 Most Imp L-2

Class 10 science bio ch 3 lec 1

10th science ch 12 electricity 2022

Std 8 maths ch 5 || standard 8 maths chapter 5 in gujarati||class 8 maths ch 5||ભાગ=૪|| Child Guruji

Under identical conditions of pressure and temperature, 4 L of gaseous moxture ( H_(2) and CH_(4) ) effuses through a hole in 5 min whereas 4 L of a gas X of molecular mass 36 takes to 10 min to effuse through the same hole. The mole ratio of H_(2):CH_(4) in the mixture is:

Which of the following solutions when added to 1L of a 0.1 M CH_3COOH will cause no change in the pH of the solution K_a=1.8xx10^(-5) for CH_3COOH ?

The heat librerated on complete combustion of 1 mole of CH_(4) gas to CO_(2)(g) and H_(2)O(l) is 890 kJ. Calculate the heat evolved by 2.4 L of CH_(4) on complete combustion. ( 1 mol of CH4 at 298K and 1 atm= 24L)

Assuming ideal behaviour, calculate Boyle's law constant for each of the following gase at 25^(@)C a. 10g of O_(2) in 2 L container b. 8g of CH_(4) in 5 L container

If 1 mole of CH_(3)COOH and 1 mole of C_(2)H_(5)OH are taken in 1 litre flask, 50% of CH_(3)COOH is converted into ester as, CH_(3)COOH_((l))+C_(2)H_(5)OH_((l))hArrCH_(3)COOC_(2)H_(5)(l)+H_(2)O_((l)) There is 33% conversion of CH_(3)COOH into ester, if CH_(3)COOH "and" C_(2)H_(5)OH have been taken initially in molar ratio x:1 , find x .

Arrange the following in the order as mentioned : (CH_3)_3 C-(CH_3)_2 CH-CH_3 CH_2-CH_3 - groups in the order of increasing + l-effect,