Question
If a solution changes the colour of blue litmus paper to
red, what will the pH of this solution be?Solution
If a solution turns blue litmus red, its pH is likely to be 6. When Blue paper turns red in acid, then the pH is less than 7.
- ‘A’ and ‘B’ play a game in which a coin is tossed 4 times. ‘A’ wins if at least 3 heads appear. Find the probability that ‘A’ wins.
The names of 8 students from section A, 9 students from section B and 10 students from section C were selected. The age of all the 27 students was diffe...
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In a bag, there are 7 red balls, 5 black balls, and 9 green balls. If two balls are selected at random, what is the likelihood of picking one red ball a...
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