Q4.Alkaline earth metals have large size of the atoms. Therefore, they shows
Answer : Option CExplaination / Solution:
The reason is that the atoms of alkali metals are of large sizes. therefore, the outermost electon is for away from the nucleus and canbe easily removed
Q6.The elements present in an organic compound are converted from covalent form into the ionic form by fusing the compound with sodium metal. This test is called
Answer : Option AExplaination / Solution:
to covert covalent form to ionic form sodium fusion test is done this is lassaignes test.
Answer : Option AExplaination / Solution:
The iron and steel industry in India had a real beginning in the year 1907 after the establishment of Tata Iron and Steel Company (TISCO).
Q9.Which among the following is an example of photochemistry used in our daily life?
Answer : Option BExplaination / Solution:
Photography is an example of photochemistry used in our daily life. Reaction takes place in the presence of light