Question
Which of the following is a characteristic property of
acids ?Solution
Acids turn blue litmus paper red due to their acidic nature. (A) Have a pH greater than 7: acids have a pH less than 7. (C) Turn red litmus paper blue: this is a property of bases. (D) More than one of the above: only option (B) is correct.
A businessman's earning increase by 25%in one year but decreases by 4%in the next. Going by this pattern, after 5 years, his total earnings would be Rs....
In a city, the number of persons travelling by bike is 70% the number of persons travelling by metro. The number of persons travelling on foot is 50% th...
In an examination having total 300 questions, in the first section having 180 questions. A student got 75% marks in first section, but he got 80% marks ...
Aman allocated 40% of his monthly income for purchasing newspapers and then spent 52% of the remaining amount on food, saving the rest. If the amount sa...
A person spent 15% of his monthly income on food and 60% of the remaining on rent. If amount spent on rent is Rs 5798.70, then find the amount spent on ...
In an exam, Sunil scored 46% marks and failed by 65 marks whereas Anil scored 66% marks in the same exam and scored 45 marks more than the passing marks...
If price of grains is increased by 50%, by how much percent a person has to decrease his consumption of grains so that expenditure on grain increases on...
The difference between 7/10 of a number and 38% of the number is 112. What is 20% of the number?
...- Initially, Meena had a salary of Rs. 45,000 and her expenses to savings were in the ratio 5:4. After her salary increase, she spent 10% less and saved 50% ...
If the price of an essential good rises by 18% and the consumer decreases his consumption by 12%, what will be the percentage change in the expenditure?
