Home
Class 12
BIOLOGY
Motor vehicles equipped with catalytic ...

Motor vehicles equipped with catalytic converter should use only unleaded petrol. Justify .

A

lead is a heavy metal

B

lead causes inactivation of catalyst

C

lead decreases the efficiency of vehicle

D

lead increases burning of petrol

Text Solution

Verified by Experts

The correct Answer is:
B

Automobiles fitted with catalytic converter should not use leaded petrol because lead inactivates the catalyst of the converter.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : Through the use of catalytic converters, unburnt hydrocarbons are changed into carbon monoxide which in turn is changed into nitrogen oxides and water. Reason : Motor vehicles equipped with catalytic converters should use leaded petrol to protect the catalyst from degradation.

Vanda uses the host plant only for the support and does not harm it'. Justify the statement.

A lady with pregnancy of Ist trimester had a road accident with a mild injury on her left arm and forehead. She rushed to a nearby hospital. The doctor immediately advised to have some biomedical diagnosis. a. Mention any three major biomedical equipments used for the above diagnosis. b. Justify the selection of these equipments for the diagnosis.

The broadcast signals that originate from a radio station are sent to an articifical satellite for redistrubution to other locations. Name the orbit where such satellite should be placed and the lanuch vehicle used.

Match column I with column II and select the correct option from the given codes. {:("Column I", "Column II"),("Catalytic converter", (i)"Used in industries and power plants"),("Electrostatic precipitator", (ii) "Used in automobiles"),("Earmuffs", (iii)"High noise level"),("Land fils", (iv) "Solid wastes"):}

A multinational company (XYZ) marketed a medicine extracted from medicinal herbs grown in the sprawling fields in a foreign country. This herb is found only in our country and no compensation was paid or permission taken from relevant authorities i) What is the term used to refer to such an act committed by the multination al company? ii. Justify the meaning of the term. ii. What has our government done to prevent such deeds?

Given below are densities of some solids and liquids. Give rough estimates of the size of their atoms : [Hint : Assume the atoms to be 'tightly packed' in a solid or liquid phase, and use the known value of Avogadro's number. You should, however, not take the actual numbers you obtain for various atomic sizes too literally. Because of the crudeness of the tight packing approximation, the results only indicate that atomic sizes are in the range of a few Å].

Our monthly electricity bill contains a basic charge, which does not change with number of units used, and a charge that depends only on how many units we use. Let us say Electricity board charges Rs 110 as basic charge and charde Rs. 4 for each unit we use. If a person wants to keep his electricity bill below Rs. 250. then what should be his electricity usage