Chemistry (General Science): All SSC Exams Previous Years Questions Papers Solved Part 10

Q.1:- An alloy used in making heating elements for electric heating device is ?

1. Solder
2. Alloy Steel
3. Nichrome
4. German Silver

Q.2:- The pair of compounds used as anaesthetic in medicines ?

1. Ether, Ammonia
2. Nitrous Oxide, Chloroform
3. Chloroform, Nitrogen Dioxide
4. Nitrogen Dioxide, Ether

Q.3:- Rectified spirit is ?

1. 95% Ethyl Alcohol
2. 100% Ethyl Alcohol
3. Methylated Spirit
4. Tincture Iodine

Q.4:- The molecular used in a nuclear reactor is ?

1. Uranium
2. Radium
3. Ordinary Water
4. Graphite

Q.5:- Hydrochloric acid is also known as ?

1. Galic Acid
2. Picric Acid
3. Muriatic Acid
4. Chloric Acid

Q.6:- Nucleons are regarded as composites sub-particles known as ?

1. Mesons
2. Quarks
3. Leptons
4. Photons

Q.7:- Which one of the following elements exhibits the greatest tendency to lose electrons ?

1. Fluorine
2. Lithium
3. Oxygen
4. Zinc

Q.8:- Chemical range of common salt is ?

1. Sodium Chloride
2. Sodium Bicarbonate
3. Sodium
4. Sodium Oxide

Q.9:- The inert gas which is substituted for Nitrogen in the air used by deep sea divers for breathing, is ?

1. Xenon
2. Krypton
3. Argon
4. Helium

Q.10:- An acid having basicity one is ?

1. Sodium Di-Hydrogen Phosphate
2. Di-Sodium Hydrogen Phosphate
3. Sodium Phosphate
4. Phosphoric Acid

Q.11:- Organic food is supposed to be better for human consumption because ?

1. It is grown in glass house & air tight environment
2. It is grown without the use of chemicals & synthetic pesticides
3. It depends on chemicals & fertilizers
4. It is too expensive to buy

Q.12:- Acid rain is caused by the pollution of environment by ?

1. Carbon Dioxide and Carbon Dioxide
2. Ozone and Carbon Dioxide
3. Nitrous Oxide and Sulphur Dioxide
4. Carbon Dioxide and Nitrogen

Q.13:- Heavy water is ?

1. Deuterium
2. Rain Water
3. Tritium Oxide
4. Deuterium Oxide

Q.14:- Atoms having the same number of protons but different number of neutrons are called ?

1. Isotopes
2. Cations
3. Higgs-Boson
4. Anions

Q.15:- Acid rain is caused due to pollution of atmosphere by ?

1. Oxides of Carbon and Nitrogen
2. Oxides of Nitrogen and Sulphur
3. Oxides of Nitrogen and Phosphorous
4. None of these

Q.16:- Atomic explosion is triggered by ?

1. Thermo Nuclear Reaction
2. Chemical Reaction
3. Controlled Chain Reaction
4. Uncontrolled Chain Reaction

Q.17:- Which of the following is not a gaseous air pollutant ?

1. Oxides of Nitrogen
2. Hydrocarbon
3. Smoke
4. Oxides of Sulphur

Q.18:- All isotopes of the same element have ?

1. Different atomic numbers and different atomic mass
2. Different atomic numbers and the same atomic mass
3. The same atomic number but different atomic masses
4. The same atomic number and the atomic mass

Q.19:- An emulsion is a colloidal solution of ?

1. Liquid in liquid
2. Solid in liquid
3. Gas in solid
4. Solid in Solid

Q.20:- Thermal electricity is generated by using which of these ?

1. Coal only
2. Coal and Natural Gas only
3. Coal, Natural Gas and Petroleum
4. None of these

Q.21:- Nylon threads are made of ?

1. Polyester Polymer
2. Polyamide Polymer
3. Polyvinly Polymer
4. Polysaccharide

Q.22:- Which one of the following non-metals shows allotropy in the liquid state ?

1. Carbon
2. Sulphur
3. Phosphorous
4. Bromine

Q.23:- Highest percentage of carbon is found in which form of coal ?

1. Anthracite
2. Bituminous
3. Peat
4. Lignite

Q.24:- White Phosphorus is generally kept under ?

1. Alcohol
2. Water
3. Glycerine
4. Water

Q.25:- When a bond is formed between two atoms, the energy of the system will ?

1. Increase
2. Decrease
3. Remain the same
4. May increase or decrease