Home
Class 12
BIOLOGY
A : ESP can remove the particulate matte...

A : ESP can remove the particulate matter by more than 99%.
R : Anode attract the partioles and provie positive charge the same & allow them to fall.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are ture but the reason is not the correct explanation of the assertion, then mark (2).

C

If Assertion is true statement but Reason is false, then mark (3).

D

If both Assertion and Reason are false statements, then mark (4).

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL ISSUES

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION C|92 Videos

  • ECOSYSTEM

    AAKASH INSTITUTE|Exercise Section - D (Assertion - Reasion Type questions)|15 Videos

  • EVOLUTION

    AAKASH INSTITUTE|Exercise TRY YOURSELF|29 Videos

Similar Questions

Explore conceptually related problems

Consider the following statements with respect to pollution. A. To control air pollution problems, by the end of 2002 all the buses of Delhi were converted to run on unrelated petrol B. Electrostatic precipitator can remove over 99% particulated matter present in the exhaust from a thermal power plant. C. It is possible to estimate the amount of organic matterin sewage water by measuring BOD. Of the above statements:

Electrostatic precipitator (ESP) I.is an electrical device to remove particulate matter present in the exhaust of thermal power plant II.More than 99% particulate matter can be removed by this method III.ESP has electrode wires and a stage of collecting plates which of the statements given above are correct?

Consider statements a—c about pollution: a. To control air pollution, all buses in Delhi were asked to run on unleaded petrol by the end of 2002. b. Electrostatic precipitator can remove 99% of particulate matter from thermal power plant exhaust. c. It is possible to estimate amount of organic matter.

The second ionisation energies are higher than the first ionisation energies. This is mainly due to the fact the after the removal of the first electron, the atom changes into monovalent positive ion. In the ion, the number of electrons decreases but the nuclear charge remains the same. as a result of this, the remaining electrons are held more tightly by the nucleus and it becomes difficult to remove the second electron. therefore, the value of second ionisation energy. (IE_(2)) , is greater than that of the first ionisatio energy (IE_(1)) . similarly third ionisation energy (IE_(3)) is greater than that of second IE_(2) . Q. IE_(1) and IE_(2) of Mg metal are 178 and 348 kcal/mol respectively. the energy required for the given reaction is: Mg(s) to Mg^(+2)+2e^(-)

The existence of negatively charged particle in an atom was shown by J.J. Thomson as a result of the studies of the passage of electricity through gases at extremely low pressure known as discharge tube experiments. When a high voltage of the order of 10,000 volts or more was impressed across the electrodes, some sort of invisible rays moved from the negative electrode to the positive electrode these rays are called as cathode rays. Cathode rays travel in straight path in absence of electrical and magnetic field . Cathode rays consist of material part and charged particles? Cathode rays produce X-rays and light is emitted when they strike on ZnS screen. Cathode rays penetrate through thin sheets of aluminium and other metals . They affect the photogenic plate and passes heating effect when they strike on metal foil. The raito of charge to mass i.e charge/mass is same for all the cathode rays irrespective of the gas used in the tube. The existence of positively charged particle in an atom was shown be E. Goldstein. He repeated the same discharge tube experiments by using a perforated cathode. It was observed that when a high potential difference was applied between the electrodes, not only cathode rays were produced but also a new type of rays were produced simultaneoulsy from anode moving towards cathode and passes through the holes or canal of the cathode. These termed as canal rays or anode rays. These rays travel in straight lines and consists of positively charged particles. These rays have kinetic energy and produces heating effect also. The e/m ratio of these rays is smaller than that of electrons. Unlike cathode rays, their e/m value is dependent upon the nature of the gas taken in the tube. These rays produced flashes of light on ZnS screen and can pass throughs thin metal foils. They can produce physical and chemical changes and are capable to produce ionisation in gases. Which is not true with respect to cathode rays?