std 7 science ch 5,dhoran 7 science swadhyaypothi ch 9,std 7 science path 5 aesid beiza ane kshar swadhyaypothi,dhoran 7 vigyan ch 5 swa Adhyayanpothi,std 7 science ch 5, ધોરણ સાત વિજ્ઞાન પાંચ એસીડ બેઈઝ અને ક્ષાર,ધોરણ 7 વિજ્ઞાન પાઠ 5 એસીડ બેઈઝ અને ક્ષાર,gujarati medium std 7 ch 5

There are 5 candidates for mathematics , 7 for science and 3 for arts scholarship . Find the number of ways of give one scholarship either for mathematics or for science or for arts.

In a certain code language, SCIENCE is written as 7-5-16-7-11-5-21. How will MUSEUM be written in that code language?

How many times of the acetic acid concentration, acetate salt should be added to a given acetic acid solution to obtain a solution of pH = 7.0 ( K_a for CH_3COOH=1.8xx10^(-5) ) .

What is the pH of 7.0 xx 10^(-8)M acetic acid. What is the concentration of un-ionsed acetic acid. K_(a) of CH_(3)COOH = 1.8 xx 10^(-5) .

Alanine, H_2NCH(CH_3)CO_2H , has K_a=4.5xx10^(-3) and K_b=7.4xx10^(-5) Which species has the highest concentration at a pH of 7.00 in H_2O ?

Ionisation constant of CH_(3)COOH is 1.7 xx 10^(-5) and concentration fo H^(+) in certain acetic acid solution is 3.4 xx 10^(-4) M . The concentration of acetic acid solution is

Directions :- Student strength of acollege in Arts,Science and Commerce from 2004-2005 to 2007-2008 session are shown in the following bar graph.Study the graph and answer thequestions that follows. The ratio of average number of students in Science to the average number of students in Commerce is (A) 10 : 7 (B) 7 :4 (C ) 12 :5 (D) 48 : 35