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1) Which of the following process is endothermic?

2) "X" compound absorbs yellow colour light, it will look like it

3) How many s-orbital electrons are there in phosphorus?

4) Which of the following group elements are strong reducing agents?

5) Sodium reacts with water more vigorously than lithium because

6) In the case of melting points and boiling points which element will be present at the top of the graph

7) Which of the following pair of elements shows the abnormal electronic configuration

8) Which of the following group has the highest electrical conductivity

9) Zn and Cd are non-typical transition elements and they belong to the _______ group.

10) The melting and boiling point of silicon is highest in the 3rd period. This is because of

11) Choose the incorrect statement

12) Ionization energy increases from left to right. In which case the highest amount of energy is required to remove valence shell electrons.

13) Paramagnetic behaviour of an atom, ion or molecule is due to the presence of

14) The size of the atoms and ions go on decreasing in periods of s and p block elements because of

15) Which of the following element in reaction with oxygen produce ionic oxides?

16) The total number of unpaired electrons in an atom of atomic number 24 when it carries a +3 charge

17) II-A elements on reaction with oxygen produce their oxides and these oxides are very stable due to their.

18) Which of the following is the correct decreasing order of basic character of alkali metal oxides?

19) Which of the following is correct regarding the IA elements in the group?

20) The geometry of the complexes depends upon the type of _______ taking place in the
valence shell of the central metal atom.

21) Which of the following has the highest binding energy?

22) Which is the most stable electronic configuration of 1st transition series.

23) Which property of alkaline earth metals decreases with the increase in atomic number

24) Choose the correct statement

25) How many non-metals are present in the s-block?