Question
What would be the pH value of a solution that turns blue
litmus paper red?Solution
The pH scale measures the acidity or alkalinity of aqueous solutions. When a solution turns blue litmus paper red, it indicates acidic properties. Acidic solutions always have a pH value less than 7, with stronger acids having lower values on the scale.
The average price of two motorcycles, namely 'G' and 'H' is Rs. 28,400 whereas the average price of motorcycles 'H' and 'I' is Rs. 30,200. If the averag...
Neha spends an average of Rs. 480 on Sundays and Rs. 360 on the remaining days. Find her average spending in a 30-day month starting with Sunday.
Average marks scored by each boy in a class were 90, whereas that by each girl were 100. If the number of boys is 50% more than the number of girls, the...
Average weight of all the people in a group is 61 kg. When two people of weight 66 kg and 84 kg left the group, average weight reduces by 1 kg. Find the...
Average weight of 13 nurses is 45 kg. If the weight of one more nurse is included, then average weight is increased by 1 kg. Find the weight of the newl...
In an examination the average marks of Rohit is 62. If he got 19 more marks in science and 26 more marks in maths then his average would have been 67. F...
The average marks of 22 students is 64. If x new students join with an average of 75 marks, the class average increases to 66. Find x.
The average weight of a family of 7 members is 68 kg. If the eldest member dies, the average weight of the family decreases by 2 kg. Find the weight of ...
25 students go for a picnic. 10 of them spent Rs. 64 each on their food and rest spent Rs.4 more than the average expenditure of all 25. What was the to...
The average marks scored by 20 boys and 45 girls are 88 and 94 respectively. Find the average marks scored by all the students together. (Answer should ...
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