NOUN TMA Questions and Solutions – CHM101, Introductory Inorganic Chemistry
1 Hydrides of alkali metals react with water to librate which of these?______________
hydrogen
2 Which of these alkalis has the most stable floride?______________
lithium
3 Why was Newlands law of octaves rejected?____________
It could not hold good for elements heavier than calcium
4 Which of these statements is not true of metallic hydrides? ______________
they are volatile
5 Which property was used by Mendeleev to classify elements?_______________
chemical properties
6 Which of these alkali metals is the most electropositive?_____________________
caesuim
7 The presence of hydrogen bond in most molecules is responsible for the following EXCEPT
Low boiling point
8 The tendency of an atom to attract towards itself shared electron pair of a bond is known as
electronegativity
9 Which of the isotopes of hydrogen is radioactive?________________
Tritium
10 All these can be used as raw materials for the production of oxygen except _________.
nitrog en
11 Which of these is not a covalent hydride?___________________
NaH
12 The most abundant metal in sea water is called ______.
sodi um
13 Which of these statements is not true of metallic elements?__________________
They form acidi c oxides
14 Which of the following is not true as we move down a group of s and pblock
elements in the periodic table? _______________
Electronegativity also increases
15 Stability of alkali salts depends on which of the following?________________
enthalpy of formation of the salt
16 How many electrons are in potassium atom?__________
19
17 How many elements are there in period 6 of the periodic table ? _________________
32
18 Which of these elements behave partly as the alkaline metals as well as a halogen element?
Hydroge n
19 Which of these periods of the peroidic table has only eight elements? ____________
3
20 Which of these elements has the electronic configuration of
$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{1}$?
Cu
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