Rohan suggested to his Principal not to use yellow color on school buses. He read an article in newspaper “Sudden decline in IQ levels of children and unexplained retardation among the newspaper that "Sudden decline them can now be traced to unacceptably hign levels of lead in their blood sugar level. The health hazard has been to high levels of lead in domestic paints used on the wall of schools, traced residences, school buses, swings in play ground and toys”.
A) What is meant by IQ? State a cause of decline of IQ in children.
B) Which compound of lead is used in the yellow paint of school buses?
C) What are the values possessed by Rohan who wants to use lead free paints on vehicles?
Answers
Answer:
IQ stands for intelligence quotient it test all tool to measure intellectual abilities and potential
b. lead chromate is a compound which is used in yellow paint of school buses
c. Rohan is a very intelligent boy as he cares every boy and it has a very minded
QUESTION:
A) What is meant by IQ? State a cause of decline of IQ in children?
B) Which compound of lead is used in the yellow paint of school buses?
C) What are the values possessed by Rohan who wants to use lead free paints on vehicles?
ANSWER:
A) IQ means intelligent Quotient. This is a value which helps in telling about the intelligence and sharpness .This value is calculated based on mental age and the chronological age. The primary cause of decline in IQ is the contact of children with the paints and the primary cause is the presence of lead in brain which damages the brain.
B) The compound of lead used in yellow paints is lead chromate PbCrO4.
C) The values inculcated in Rohan are awareness, concern for society