Question Text
Question 1 :
Use Mendeleev's periodic table to predict the formulae for the oxides of the elements 'Si'.
Question 2 :
Use Mendeleev's periodic table to predict the formulae for the oxides of the elements 'Ba'.
Question 3 :
Name two elements that have two electrons in their outermost shells.
Question 4 :
By considering their position in the periodic table, which one of the following elements would you expect to have maximum metallic characteristic?: Ga, Ge, As, Se and Br
Question 6 :
What were the criteria used by Mendeleev in creating his periodic table?
Question 7 :
Use Mendeleev's periodic table to predict the formulae for the oxides of the elements 'K'.
Question 8 :
Name three elements that have a single electron in their outermost shells.
Question 9 :
Use Mendeleev's periodic table to predict the formulae for the oxides of the elements 'Al'.
Question 10 :
Use Mendeleev's periodic table to predict the formulae for the oxides of the elements 'C'.
Question 13 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d2d273b230584979bb5.JPG' />
In the given figure, name the compound.
Question 15 :
Carbon and its compounds are some of our major sources of fuels. Is it TRUE OR FALSE?
Question 18 :
Carbon is tetravalent because it has four valence electrons. Is it correct ?
Question 20 :
Oils containing unsaturated fatty acids should be chosen for cooking. Is it TRUE OR FALSE?