Which of the following statements with reference to Humus is/are correct ? 1. It is a dark coloured amorphous substance. 2. Being colloidal in nature, it serves as a reservoir of nutrients. Select the answer using the code given below :

Which of the following statements with reference to saline soil in India is/are correct? 1. They are rich in nitrogen. 2. They occur in arid and semi-arid regions, and in waterlogged and swampy areas…

Which of the following statements is correct about laterite soil? (1) This soil is developed in areas with high temperature and heavy rainfall. (2) It is poor in iron oxide and aluminium. Select the…

Given below are two statements, in which one is labelled as Assertion (A) and the other as Reason (R) - Assertion (A) : The colour of Red Soil is due to the wide diffusion of iron rather than to a hi…

Which of the following statements regarding Regur soil is/are correct ? 1. It is a light coloured, clayey and fertile soil. 2. It is developed on Deccan basaltic lava under hot and humid conditions.…

Which one among the following statements with reference to the black cotton soils of India is NOT correct?