Consider the following statements :
1.Tides are of great help in navigation and fishing.
2.High tide enables big ships to enter or leave the harbour safely.
3.Tide prevents siltation in the harbours.
4.Kandla & Diamond Harbour are tidal ports.
Which of these statements are correct?

Consider the following statements about the megacities of India :
1.Population of each megacity is more than 5 million.
2.All the megacities are importance sea ports.
3.Megacities are either national or state capitals.
Which of these statements are correct?

The correct sequence in decreasing order of the four sugarcane producing States in India is :

Which one of the following ports of India handles the highest tonnage of import cargo?

Along which one of the following meridians did India experience the first light of the sunrise of the new millennium?

Which one of the following pairs of primitive tribes and places of their inhabitation is NOT correctly matched?

Assertion (A): Ganga Plain is the most densely populated part of India.
Reason (R): Ganga Plain is the most densely populated part of India. Ganga is the most harnessed river of India.

Which one of the following statements is true according to 1991 census data?

Consider the following statements:
1.Maharashtra has the highest acreage under Jawar in India.
2.Gujarat is the largest producer of groundnut in India.
3.Rajasthan has the largest area of cultivable wasteland in India.
4.Andhra Pradesh has the highest per hectare yield of maize in India.
Which of these statements are correct?

Assertion (A): The frequency of floods in North Indian plains has increased during the last couple of decades.
Reasons (R): There has been reduction in the depth of river valleys due to deposition of silt.