Question
Which reagent is used to distinguish between aldehydes
and ketones?Solution
Tollen's reagent gives a silver mirror with aldehydes but not with ketones.
The average of series 'S5', which consists of 6 consecutive even numbers, is 23. The second term of series 'T5', which consists of 5 consecutive odd num...
In a team of 25 players, the average age is 26 years. One player aged 24 left and five new players with an average age of 28 years joined. When the coac...
What is the average of odd numbers greater than 10 but less than 30?
The average price of two cars, namely 'M' and 'N' is Rs. 45,000 whereas the average price of cars 'N' and 'O' is Rs. 50,000. If the average price of car...
The average age of a group of nine children is 7 years. From the group, three children, whose ages were 3 years more, 2 years more, and 4 years more tha...
A mixture contains oil and water in the ratio 7:5. When 70% of this mixture is replaced with 153 litres of water, the ratio becomes 8: 13. Than, what wi...
The average age of 4 children in a family is 30% of the average age of the mother and the youngest child. The total age of the father and the eldest chi...
Average weight of 13 nurses is 45 kg. If the weight of one more nurse is included, then average weight is increased by 1 kg. Find the weight of the newl...
Determine the value of a − b given that a + 3b = 18a and 3a + b = 30 .
Average of eleven consecutive numbers is 42. Find the sum of smallest and largest number.
