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Free tnpsc model questions Online Test - MeritNotes
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No. of Questions :10
Remaining Time :
1. The most electropositive amongst the alkaline earth metals is
(a)
Barium
(b)
Beryllium
(c)
Calcium
(d)
Magnesium
2. Smoke is an example of
(a)
Liquid dispersed in solid
(b)
Solid dispersed in gas
(c)
Gas dispersed in liquid
(d)
Gas dispersed in solid
3. The standard heat of formation of diamond is
(a)
Taken as zero
(b)
Less than that of graphite
(c)
Greater than of graphite
(d)
Same as that of graphite
4. Which of the following transition metal is in liquid state?
(a)
Mercury
(b)
Chromium
(c)
Cadmium
(d)
Vanadium
5. Or which of the following cells, the standard cell voltage is zero?
(a)
Fuel cell
(b)
Daniell cell
(c)
Concentration cell
(d)
Electrolytic cell
6. Which metal shows more than one oxidation state?
(a)
Mg
(b)
Fe
(c)
Na
(d)
Ag
7. Which one of the following fuels causes minimum environmental pollution?
(a)
Kerosen
(b)
Diesel
(c)
Coal
(d)
Hydrogen
8. The magnetic separation is used for increasing concentration of the following
(a)
Haematite
(b)
Calcite
(c)
Magnesite
(d)
Horn silver
9. In a period, the elements are arranged in the order of
(a)
Increasing charges in the nucleus
(b)
Decreasing charges in the nucleus
(c)
Equal charges in the nucleus
(d)
Constant charges in the nucleus
10. The substance used as an activator in froth floatation process is
(a)
Sodium cyanide
(b)
Potassium ethyl xanthate
(c)
Pine oil
(d)
Copper sulphate