Chemistry Quiz

Which of these is a part of soil that is most helpful to the growth of plants?

• Humus

• Clay

• Sand

• Small porous rocks

Which of the following layers of the soil contain more humus?

• Bedrock

• Topsoil

• Subsoil

• Both a and b

A-horizon layer forms __________

Rain water gets collected in ____________ layer

• B-horizon

• E-horizon

• Bedrock

• C-horizon

How is soil categorized

• Size

• Proportion of particles

• Both a and b

• None of the above

How is sandy soil formed ?

• Limestone

• Granite

• Shale

• All of the above

Clayey soil is the best soil for gardening ?

• True

• False

Which crop is grown in black soil?

• cotton

• paddy

• Wheat

In which of the following processes land surface is removed by water, wind or ice?

• soil seepage

• soil sewage

• soil erosion

• soil weathering

Soil conservation measures are mainly aimed at protecting which of the following?

• Plants

• Topsoil

• soil organisms

• animals