Home
Class 11
BIOLOGY
The first step that must occur before pl...

The first step that must occur before plants can make use of nitrogen present in dead organic material is

A

Ammonification

B

Nutrification

C

Denitrification

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ECOSYSTEM

    AAKASH SERIES|Exercise EXERCISE-I (ECOSYSTEM SERVICES)|19 Videos
  • ECOSYSTEM

    AAKASH SERIES|Exercise EXERCISE-II (ECOSYSTEM - STRUCTURE AND FUNCTION)|23 Videos
  • ECOSYSTEM

    AAKASH SERIES|Exercise EXERCISE-I (PLANT SUCCESSION )|26 Videos
  • CELL CYCLE AND CELL DIVISION

    AAKASH SERIES|Exercise Exercise-III|18 Videos
  • ENVIRONMENTAL ISSUES

    AAKASH SERIES|Exercise Exercise-III (Previous AIPMT/NEET Questions)|41 Videos

Similar Questions

Explore conceptually related problems

In Kjeldahl's method, nitrogen present in the organic compond is first converted into

Which one of the followig methods can be used to find out the percentage composition of halogen present in an organic compound ?

List five things which we can make using each of the following material : Glass

List five things which we can make using each of the following materials: wood

List five things which we can make using each of the following material : Plastic

List five things which we can make using each of the following material : Metal

Radioactive decay is a statisticle process i.e., we cannot precisely predict the timing of a particular radioactivity of a particular nucleus . The nucleus can disintegrate immediately or it may take infinite time . Simply the probability of the number of nuclei being disintegrated at any instant can be predicted . the rate at which a particular decay process in a radioactive sample is directly proportional to the number of radioactive nuclei present and thus obeys first order kinetics . the factor dN/N expresses the fraction of nuclei decayed in time dt. t_(1//2) is the time in which half of the atoms are decayed and average life is the time for the nucleus to survive before decay . 75 atoms of a radioactive species are decayed in 2 half lives (t_(1//2) = 1 hr ) if 100 atoms are taken initially . Number of atoms decayed if 200 atoms are taken in 2 hr are :

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDeltaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. Which of the following elements can be prepared by heating the oxide above 400^(@)C ?

Electronic configuration of multielectron atoms can be written by the use of four quantum numbers and also by following certain principles. Pauli's exclusion principle suggests that maximum capacity of an atomic orbital is two. Auf bau principle suggests that the lower energy orbitals are filled first and hence stability can be attained. Hunds rule of maximum multiplicity suggests that pairing occurs with one electron. The arrangement of electrons in the space around the nucleus can be understood only after writing the electronic configuration. Thus writing electronic configuration is more important in the structure of an atom. The set of quantum numbers not possible for electrons present in potassium atom in its ground state

Assertion A : Only some micro organisms can fix atmospheric nitrogen. Reason R : Nitrogen is present abundantly in atmopshere.