0.023g of sodium metal is reacted with 100cm 3 of water. The pH of the resulting solution is?
Sunjeeth pandey A) 10 B) 11 C) 9 D) 12 Solution
Excess of carbon dioxide is passed through 50 mL, of 0.5 M calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N hydrochloric acid. The volume of hydrochloric acid required is (Atomic mass of calcium = 40)
A) 300 cm3 B) 500 cm3 C) 290cm3 D) 450 cm3 Solution
SIMPLE NOTE ON GUPTA DYNASTY
The Gupta dynasty was a ruling dynasty of ancient India that flourished from the 3rd to 6th century CE. The dynasty was founded by Sri Gupta, who was succeeded by…
The monthly salaries of A and B are the same. A, B and C donate 10%, 8% and 9% respectively, of their monthly salaries to a charitable trust. The difference between the donations of A and B is Rs. 400. The total donation by A and B is Rs. 900 more than that of C. What is the monthly salary of C.
Options A) 30,000 B) 26,000 C) 45,000 D) 75,000 DETAILED SOLUTION
Anuja owns of a property. If 30% of the property that she owns is worth Rs. 1,25,000, then 45% of the value (in Rs) of the property is:
Options A) 270000 B) 281250 C) 225000 D) 262500 DETAILED SOLUTION
Rishu saves x% of her income. If her income increases by 26 % and the expenditure increases by 20 % then her savings increases by 50% what is the value of x ?
Option A) 25 B) 30 C) 20 D) 10 Detailed solution Answer is 20
A person borrows Rs 20000 at the rate of 6 percent per annum on simple interest for 3 years. He immediately lends it to another person at the rate of 8.5% percent per annum on simple interest for 3 years. what is the value of gain per year?
OPTIONS A) Rs 200 B) Rs 800 C) Rs 500 D) Rs 1500 detailed solution Amount 20000Interest 6 %duration 3 yearsFormula PTR/100on substitution 20000X6X3/100answer 3600Amount 20000Interest 8.5%duration 3 yearsFormula PTR/100on…
The market price of an item was Rs 480 but shopkeeper offered discounts of 5%. At what price does he finally sell the item.
Options A) 456 B) 466 C) 435 D) 450 Detailed solutions 480 rs ------ 100 % _______------ 5% 5x480/100 = 24 Market price 480 After 5 % discount is 480-24…