Question
Whichmaterials should not be present in garbage for its proper microbial decomposition?
✓
Answer
(i) Presence of synthetic polymers and insecticides will badly affect the microbial decomposition.
(ii) Toxic levels of elements (Aluminium, Manganese, Boron, Selenium and chlorine, excessive soluble salts and organic phylotoxins in plant materials affect decomposition of garbage.
(ii) Toxic levels of elements (Aluminium, Manganese, Boron, Selenium and chlorine, excessive soluble salts and organic phylotoxins in plant materials affect decomposition of garbage.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Compete the analogy :
Force : ma : : Gravitational force : __________.
Force : ma : : Gravitational force : __________.
What happens when a solution of sodium hydrogencarbonate is heated? Write equation of the reaction involved.
What is the molecular formula and structural formula of a cyclic hydrocarbon whose one molecule contains $8$ hydrogen atoms?
→An object is placed well outside the principal focus of a convex lens. Draw a ray diagram to show how.
From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration?
Complete the following table for homologous series of alcohols.
→| Name | Molecular formula | Condensed structural formula | Number of carbon atom | Number of $-CH_2-$ units | Boiling point $^\circ C$ |
| Methanol | $CH_4O$ | $CH_3-OH$ | $1$ | $1$ | $63$ |
| Ethanol | $C_2H_6O$ | $CH_3–CH_2-OH$ | $2$ | $2$ | $78$ |
| Propanol | $C_3H_8O$ | $CH_3–CH_2–CH_2-OH$ | ______ | ______ | $97$ |
| Butanol | $C_4H_{10}O$ | $CH_3–CH_2–CH_2–CH_2–OH$ | ______ | ______ | $118$ |
The elements A, B and C belong to groups 1, 14 and 17 respectively of the periodic table.
- Which two elements will form a covalent compound?
- Which two elements will form an ionic compound?
Observe the straight chain hydrocarbons given below and answer the following questions:
(i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
(ii) Name these straight chains.
(iii) Write their chemical formulae and number of $-CH_2$ units.
→(i) Which of the straight chain compounds from A and B is saturated and unsaturated straight chains?
(ii) Name these straight chains.
(iii) Write their chemical formulae and number of $-CH_2$ units.
A person having short-sight cannot see objects clearly beyond a distance of 1.5 m. What would be the nature and power of the corrective lens to restore proper vision?
What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?