Question
Complete the following table (Carefully study the carbon, oxygen and nitrogen cycles).
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Similar questions
| Column ‘A’ | Column ‘B’ |
| (1) Strontium – 90 | (a) Brain tumour |
| (2) Cobalt – 60 | (b) Hyperthyroidism |
| (3) Iodine – 131 | (c) Polycythemia |
| (4) Phosphorus – 32 | (d) Bone cancer |
Carbonate salt of metal + dilute acid → Another salt of metal + Carbon dioxide + water
:Different species of Clostridium bacteria and the diseases caused by them.
Nitrogen Cycle
…………….. group of plants is called the amphibians’ of the plant kingdom because they grow in moist soil but need …………….. for reproduction. These plants are thalloid, multicellular and autotrophic. They reproduce by …………….. formation. The structure of the plant body of bryophytes is flat, ribbon?like long, without true …………….., stem and leaves. Instead, they have stem-like or leaf?like parts and root-like ……………. . They do not have specific …………….. for conduction of food and water. Examples are Moss (Funaria), Marchantia, Anthoceros, Riccia, etc.
(1) Protection from Electricity
(2) Resistance
(3) Resistivity
Metal + Dilute acid → Salt + Hydrogen
Thallophyta plants grow mainly in …………….. . This group of plants, which do not have specific parts like root-stem-leaves-flowers but are autotrophic due to the presence of …………….., is called algae. Algae show great diversity. They may be unicellular or …………….., and microscopic or large. Examples of algae are Spirogyra, Ulothrix, Ulva, Sargassum, etc. Some of these are found in fresh water while some are found in saline water. These plants usually have a …………….. and fibre-like body. Various types of …………….. like yeasts and moulds which do not have …………….. are also included in this group.
In physics, ………….. is the rate of doing work or, i.e., the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the ………….. equal to one ………….. per second.
Power is a ………….. quantity that requires both a change in the physical system and a specified time interval in which the change occurs. But more ………….. is needed when the work is done in a shorter amount of time.
The following figure shows the symbols for components used in the accompanying electrical circuit.![]()
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(a) Place them at proper places and complete the circuit.
(b) Which law can you prove with the help of the above circuit?
(c) State expression for Ohm’s law
(a) Place them at proper places and complete the circuit.
(b) Which law can you prove with the help of the above circuit?
(c) State expression for Ohm’s law