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CaCO3+ 2HCl = H2O + CO2(g) +Ca2++ 2Cl- Calcareous soil that contains enough freecalcium carbonateto effervesce visibly, releasing carbon-dioxide gas, when treated with cold 0.1Nhydrochloric acid,
Income of Neha is Rs. 39,000, out of which she spent 40% on daily expenses, 5% on phone bills and saves the rest. If her income is increased by 20% and ...
The income of ‘A’ increases by 35% every year. If the present income of ‘A’ is Rs. 45562.5 and his expenditure 2 years ago from now was Rs. 1200...
The population of a college grows by 25% annually. In 2019, the population was 24,000. By 2021, the ratio of boys to girls in the college is 7:8. What i...
In an assembly election, a candidate got 60% of the total valid votes. 2% of the total votes were declared invalid. If the total number of voters is 126...
In a job fair, 50% of the people are graduates, one fifth of them are post graduates and rest are double graduates. If three-fourth of the graduates, 60...
The earnings ratio of individuals 'P' and 'Q' stands at 5:3, respectively. 'P' manages to save 20% of their income, which is precisely 80% of what 'Q' s...
A man spends 22% and 20% of his monthly salary on rent and transportation, respectively. Out of the remaining money, he spends 33% on food and 50% on en...
If X = 75% of Y and Y = 125% of Z, then find the ratio of X to that of Z.
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...
There are two slabs of income tax, 7% tax for income up to 3 lakh and 12.5% for income above 3 lakh. Nitin tried to evade tax by hiding some of the inco...