Chapter 9 – Soil

The rotten dead matter in the soil is called:

Soil is formed from the parent rock material by a very slow and gradual process called:

The uppermost layer of earth’s crust, in which plants grow is:

The uses of soil are:

Soil is polluted by:

A vertical section through different layers of the soil is:

Different layers of the soil differs in feels colours, depth and chemical composition are:

What kind of soil should be used for making matkas and surahis ?

The forumla used to calculate the rate of percolation is:

Which type of soil will allow water to reach a well faster and in greater amount ?

Which type of soil retains the highest amount of water ?

Which type of soil retains the least amount of water ?

Rain water can be percolated by making:

Wind, rainfall,’temperature, light and humidity affect the:

Loamy soil is most suitable for planting:

The removal of land surface by water, wind or ice is known as:

The hard layer of rocks below the C horizon is called:

Soil carried from else where and deposits them in the:

Rain water washes off minerals and deposits them in the:

Which soil is found in the fertile plains of Punjab and Uttar Pradesh ?

The colour of red soil is due to presence of:

Bacteria, fungi, algael and tiny organisms called:

The best kind of soil for plant growth is:

To improve the capacity to hold water ……………………. is added to the soil:

Breaking down of rock to form soil is caused by:

Cause of soil erosion is:

Humus is present in:

Humus is made up of:

Fertility of soil is increased by the presence of:

aerates the soil and allows the air to reach the roots of plants:

For growing pulses the soil required is:

In addition to the rock particles, the soil contains:

The water holding capacity is the highest in:

The smallest particles of rock form the:

Which of these has the smallest size of particles:

What kind of soil is best for growing cotton ?

Humus and the smallest particles of rock form the upper layer of soil called:

Which layer of the soil has most nutrients for plants ?

Which soil has the right water holding capacity for plant growth:

Which soil when felt with your hand will be the smoothest: