RRB Group-D 29th oct 2018-shift -2

Choose the best suitable Venn diagram for the following words:
"Amphibians, Alligator, Tortoise"

The sum of the present ages of two persons is seven times that of the difference between their ages. After 5 years, the sum of their ages will become nine times that of the difference. What is the present age of the elder person?

What is the upward force exerted by the water on the bottle containing it called?

What happens to the volume (V) of the cuboid. if its length is doubled. height is doubled and breadth is kept the same?

Who among the following was elected as President of the Sahitya Akademi in 2018?

After India's $$29^{th}$$ state, Telangana. was created, which of the following parties formed the first government in the state?

Consider the following question followed by the statements and decide which of the statements is sufficient to answer the question.
Question:
8 trolleys in a supermarket are used to load and unload commodities. All of the trolleys have been filled with oil cans of two different sizes and shapes. How many cans are loaded in the trolleys in total?
Statements:
1. The shape of 8 cans are such that in one trolley only 2 can fit.
2. The rest of the trolleys are filled with 4 oil cans each.

A solution contains 42 g of common salt in 320 g of water. Calculate the concentration in terms of mass by mass percentage of the solution?

The general formula of alkynes is:

220 g of carbon dioxide contains .......... moles.