PPSC Lecturer Chemistry MCQs Sample Past Papers,Model Papers Lecturer Chemistry,Lecturer Chemistry Past Papers Practice Tests
Q.1 The elements of IIIA to VIIIA subgroups except He are known as __________ block
Q.2 Concentrated nitric acid gives __________ when it reacts with tin.
Q.3 Sulphuric acid is used to manufacture
HCl and 2COOH.
Q.4 Alkanes containing __________ carbon atoms are waxy solids.
18 or more
Q.5 Which of the following is used to make chloral hydrate?
Q.6 Ten moles of hydrogen are allowed to react with 6 moles of oxygen. How much water will be
obtained from reaction on complete consumption of one gas?
Q.7 The highest temperature a substance can exist as __________ is called its critical temperature.
Q.8 __________ hybridization leads to a regular tetrahedral structure.
Q.9 Osmotic pressure of a solution is __________ property.
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Q.10 Magnesium reacts with hydrogen at high pressure in the presence of catalyst __________
forming magnesium hydride.
Q.911 Which element has the largest number of allotropic forms?
Q.912 With increase in number of unpaired electrons, paramagnetism:
Q.913 Which metal is commonly used to remove air bubbles from molten metals?
Q.14 Which of the following bonds has minimum bond energy?
C – I
Q.15 Al2O3(SiO2).2H2O is called
Q.16 CaO forms fertilize slag by reacting with
Q.17 __________ is colorless volatile liquid at room temperature.
Q.18 Hydrogen passed through phenol at 150 ºC in the presence of __________ catalyst gives
Q.19 Ethanol-water is __________ mixture.