Model paper solution subject English

Model test paper

When Brine solution is subjected to electrolysis the gases liberated at anode and at cathode are

The following data shows the number of students opting different subject in a college: Subjects, English, Maths, Physics, Chemistry, Eco., Commerce No. of Students, 45, 60, 20, 30, 10, 15 Construct a pie-diagram to represent the above data.

Model test paper class 9

A solution 'X' give orange colour when a drop of it falls on pH paper, while another solution 'Y' gives bluish colour when a drop of it falls on pH paper. What is the nature of both the solutoins? Determine the pH of solution 'X' and 'Y'?

Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is:

A student prepared solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two ?

A coloured solution known to contain two metal ions, was treated with excedss cold sodium hydroxide solution. When filtered a whitish solid, slowly changing to brown, was retained on the filter paper and a colourless solution collected as the filtrate. dropwise addition of hydrochloric acid to the filtrate produced a white ppt. which dissolved in excess acid. treatment of the residue on filter paper with a solution of strong oxidier produced a reddishh-violet solution.. indicate any pairs of ions:

In a certain examination, the candidates can offer papers in English or Hindi or both the subjects. The number of candidates who appeared in the examination is 1000 of whom 650 appeared in English and 200 both in English and Hindi. (i) Hindi , (ii) English only, (iii) Hindi only

In a certain examination , the number of candidates who appeared in the examination is 1000 out of which 650 appeared in English and 200 appeared in both English and Hindi . Find The number of candidates who offered paper in Hindi (ii) The number of candidates who offered paper in English only.