State one advantage of inland waterways.

Using a graph paper draw a histogram for the given distribution showing the number of runs scored by 50 batsmen. Estimate the mode of the data:

Action of water on Calcium carbide.

Write a balanced chemical equation

Give a reason: Odisha has benefitted greatly from the Hirakud project

State an important industrial use of Aluminium

Name two products each of the following industries:

1. petrochemical industry.
2. heavy engineering industry.
3. electronic industry.

How does the angle of deviation formed by a prism change with the increase in the angle of incidence?

Draw a graph showing the variation in the angle of deviation with the angle of incidence at a prism...

What is meant by noise pollution? Name one source of sound causing noise pollution.

Name the soil which: occurs exsitu

A pulley system with VR = 4 is used to lift a load of 175 kgf through a vertical height of 15 m. The effort required is 50 kgf in the downward direction. (g = 10 N kg^-1) Calculate:

1. Distance moved by the
...

(i) State the volume occupied by 40 gm of methane at STP, if its vapour density (V.D.) is 8.

(ii) Calculate the number of moles present in 160 gm of NaOH. [Atomic Mass: Na = 23, H = 1, O = 16]

Give a reason: Petrochemical industries are usually located close to the oil refineries

From the diagram given below, answer the questions that follow:

1. What kind of pulleys are A and B?
2. State the purpose of pulley B.
3. What effort has to be applied at C to just raise the load L=20kgf?...

Xylem transports starch from the leaves to all parts of the plant body.

Correct the following statements by changing the underlined words:

State a method of soil conservation in the: river valleys prone to flood.

Identify the substances underlined: The dilute acid which is an oxidizing agent.