Category: Class 7th

QUESTION ANSWER The Substance Produced During Waste Treatment Used As Manure Sludge The Substance Produced During Waste Treatment Used As Manure

QUESTION ANSWER The Impurities Present In Water Known As Contaminants The Impurities Present In Water Known As  

QUESTION ANSWER The Pipe Carriying Sewage Is Called Sewer The Pipe Carriying Sewage Is Called  

QUESTION ANSWER For Drinking Purpose We Use Potable Water For Drinking Purpose We Use

QUESTION ANSWER How the rainbow was formed Rainbows is caused by  the refraction and internal refraction of light from the sun in rain drops . Each rain drops act like a tiny prism which breaks up white light into seven primary colour of rainbow How the rainbow was formed

QUESTION ANSWER Why is The silk moth killed by boiling the cocoons The silk moth killed by boiling the cocoons to ensure the continuity of silk fibres .Long silk fibres yield better quality silk Why is The silk moth killed by boiling the cocoons

QUESTION ANSWER The colour of the solution contatining sugar after addition of iodine changes to The colour of the solution contatining sugar after addition of iodine changes to Blue – Black The colour of the solution contatining sugar after addition of iodine changes to

QUESTION ANSWER Food factories of plant is Leaf Food factories of plant is

QUESTION ANSWER Chlorophyll is present in Chloroplast Chlorophyll is present in