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In ammonium ion (NH4+), a hydrogen ion (H+) combines with ammonia molecule (NH3) by a co-ordinate bond between them in which ammonia molecule shares its two electrons with hydrogen ion while the other three hydrogen atoms are attached with covalent bonds
A person spends 25% of his income on rent, 20% on food, 15% on transportation, and 10% on education. Additionally, he donates ₹3,000 and still manages...
What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is ...
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 ...
A village lost 20% of its cattle in a flood, 20% of remaining died due to diseases and 20% of the rest were disabled. If the number left now is 9600. Wh...
Monthly income of P is Rs.19000 and his monthly savings is Rs.9500. If his monthly income is decreased by 30% and monthly expenditure is decreased by 20...
Income of A is 60% of the Income of B and A together. The saving of B is 45% of his Income and equals to Rs. 8100. Find the difference between the incom...
A number is initially raised by 45%, and afterward reduced by 20%. Calculate the net percentage change (whether increase or decre...
A housewife saved Rs. 2.50 in buying an item on sale. If she spent Rs. 25 for the item, approximately how much percent she saved in the transacti...
The sum of the monthly incomes of ‘A’, ‘B’ and ‘C’ is Rs. 60000 which is 4 times the monthly income of ‘C’. If ‘A’ spends 60% of his...
