Question
A sugar solution in a tube of length 2.0 dm produces
optical rotation of 12°. Then, the sugar solution is diluted to one half of its initial concentration. If the dilute solution is contained in another tube of length 3.0 dm, the optical rotation produced by it will be:Solution
The correct answer is A
If ‘A’, ‘B’ and ‘C’ are in proportion in the given order while ‘A’ = 27 and ‘B’ = 63, then find the value of ‘C’.
...Find the third proportion to 16 and 24.
A bag contains Re 1 and 50 paise coins in the ratio 2 : 3. While the ratio of 50 paise and 25 paise is 4:5. If the total value of these coins is Rs 177....
Rs.1581 is divided among A, B and C in the ratio 10 : 15 : 6. What is the share of B?
The ratio of speeds of A and B is 3:4 and A takes 15 minutes more than B to reach the destination, how many hours will Be to reach the same place?
The ratio of A’s age to B’s age is 5:7, and the sum of their ages after 6 years is 72 years. Find the present age of A.
The number of students in class IX and class X is 70 and 75, respectively. The ratio of the number of boys to girls in classes IX and X is 9: 5 and 8: 7...
A bag contains coins of Rs 1, 50p, and 25p and the ratio of the number of coins is 6:15:16. If the total value of all the coins is Rs 1050 then what wil...
The ratio of investment of A and B is 2 : 5 and that of B and C is 3 : 7. Find the investment of B if sum of investment of A, B and C is Rs. 33600.
The ratio of the two numbers is 4:9. 140% of the first number is equal to the 70% of the second number. Find the sum of both the numbers.
Relevant for Exams:
