Chemistry (General Science): All SSC Exams Previous Years Questions Papers Solved Part 11

Q.1:- During fermentation of sugar, the compound which is always formed is ?

1. Methyl Alcohol
2. Ethyl Alcohol
3. Acetic Acid
4. Ethylene

Q.2:- Iron and manganese present as pollutants in water cannot be removed by ?

1. Oxidation followed by settling and filtration
2. Chlorination
3. Ion exchange process
4. Lime soda process or manganese zeolite process

Q.3:- Limestone is a raw material used by which industry ?

1. Aluminium
2. Fertilizers
3. Cement
4. Petrochemicals

Q.4:- LPG is mostly liquefied ?

1. Hydrogen
2. Oxygen
3. Butane
4. Methane

Q.5:- The source of energy that causes the least global warming is ?

1. Coal
2. Geothermal Energy
3. Natural Gas
4. Petroleum

Q.6:- The chemical name of quartz is ?

1. Calcium Oxide
2. Calcium Phosphate
3. Sodium Phosphate
4. Sodium Silicate

Q.7:- Terylene is a condensation polymer of Ethylene Glycol and which acid ?

1. Benzoic Acid
2. Salicylic Acid
3. Phthalic Acid
4. Terephthalic Acid

Q.8:- The purest form of water in nature is ?

1. Rain Water
2. Lake Water
3. River Water
4. Sea Water

Q.9:- Which of the following can be found as pollutants in the drinking water in some parts of India ?

Select the correct answer using the code given below :

• Arsenic
• Sorbitol
• Fluoride
• Formaldehyde
• Uranium

1. B, D and E
2. A, B, C, D and E
3. A, C and E
4. A and C

Q.10:- How many neutrons are there in ₉₂U²³⁸ atom ?

1. 92
2. 238
3. 146
4. 330

Q.11:- An element of atomic no. 29 belongs to ?

1. S-block
2. D-block
3. P-block
4. F-block

Q.12:- Which of the following elements is not radioactive ?

1. Radium
2. Plutonium
3. Zirconium
4. Uranium

Q.13:- The presence of Cobalt in Vitamin B₁₂ was established for rover first time by ?

1. Hydrolysis test
2. Spectroscopy
3. Borax-Bead Test
4. Sodium Nitroprusside Test

Q.14:- An example of replenshible energy source is ?

1. Coal
2. Petroleum
3. Lignite
4. Biomass

Q.15:- Helium gas is filled in balloons because ?

1. Its atomic number is 2
2. It is lighter than air
3. It is one of the constituents of water
4. It is a noble gas

Q.16:- The coating of a thin layer of zinc on steel or Iron Objects is known as ?

1. Hot dipping
2. Tinning
3. Galvanising
4. Electroplating

Q.17:- The temperature of Oxy-Acetylene flame is around ?

1. 2800 Deg C
2. 3200 Deg C
3. 4000 Deg C
4. 1500 Deg C

Q.18:- Which of the toxic heavy metals is found in modern tannery industries ?

1. Nickel
2. Zinc
3. Chromium
4. Lead

Q.19:- Which of the following is used in welding broken pieces of Iron rails and machine parts ?

1. Aluminium Sulphate
2. Solder
3. Aluminium Powder
4. None of the above

Q.20:- Glass is a ?

1. Superheated solid
2. Supercooled liquid
3. Supercooled gas
4. Superheated liquid

Q.21:- Two elements which are used to absorb neutrons to control the chain reaction during nuclear fission are ?

1. Boron and Cadmium
2. Boron and Plutonium
3. Cadmium and Uranium
4. Uranium and Boron

Q.22:- Which of the following produces highest amount of energy upon Oxidation ?

1. Protein
2. Fat
3. Glucose
4. An Alkane

Q.23:- Which one of the following statements is not correct ?

1. Soft and flexible
2. Strong and hard
3. Chemical resistant
4. Withstand higher temperatures

Q.24:- The common name for the compound having formal NaOH is ?

1. Caustic Soda
2. Caustic Potash
3. Soda Ash
4. Sodium Hydroxide

Q.25:- Non-Stick kitchenware are coated with ?

1. PVC
2. Graphite
3. Teflon
4. Silicon