ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which gas is not a constituent of atmosphere Xe O<sub>3</sub> H<sub>2</sub> F<sub>2</sub>
2 Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water Live stock waste Oil leaks and spills Disposal of industrial effluents Rain
3 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy 10,000 20,000 100,000 50,000
4 Which is not the affect of polluted air on environment Acid rain Smog Ozone Global warming
5 Which one of the following is not air pollutant gas CO CO<sub>2</sub> NO SO<sub>2</sub>
6 Which factor is helping to reduce the environmental pollution Rapid growth of population Urbanization Industrialization Increase of plantation
7 A pollutant affects Human health Quality of life Functioning of ecosystem All of these
8 The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount Iodine Bromine Lead Carbon
9 The region of earth capable of supporting life is Hydrosphere Lithosphere Biosphere Atmosphere
10 Oceans cove ______ percent of the surface of the earth 60 70 80 97
11 The % of CO2is the atmosphere is 3.0% 0.03% 0.3% 0.5%
12 Which is not a component of environment Biosphere Lithospahre Hydrosphere None of these
13 What is the most common catalyst used in hydrogenation of oils Cobalt Nickel Tungsten Copper
14 β-D-glucose is a monomer for Strach Cellulose Glycogen Protein
15 Monosaccharides belong to the group Lipids Fats Proteins Carbohydrates
16 Which one of the following is a water soluble vitamin D K A Ascorbic acid (Vic C)
17 Vegetable oils are Unsaturated fatty acids Glycerides of unsaturated fatty acids Glyccerides of saturated fatty acids Essential oils obtained from plants
18 The fibre which is made form acrylonitrile as monomer PVC Rayon fibre Acrylic fibre Polyester fibre
19 Plastics are a pollution problem because many plastics Are made from petroleum Are very inflammable Burn to produce toxic fumes Decompose to produce toxic products
20 Purines include Adenine Guanine Both a and b None
21 Which of these polymers is an addition polymer Nylon 6,6 Polystyrene Terylene Epoxy resin
22 Enzymes are chemically Carbohydrates Proteins Fatty acids Phospholipids
23 Which is not an enzyme Transverses Lipase Lyase None of these
24 (CH2O)nis general formula for Monosaccharides Oiligosaccharides Polysaccharides None of these
25 Which of the following is the repeating monomeric unit in cellulose Sucrose Maltose Cellobiose Glucose
26 Monosaccharides are Aldoses Ketoses Either a and b None of these
27 Substances that render enzymes catalytically inactive are called Conenzymes Substrates Inhibitors Apoezymes
28 Cotton is ______% cellulose 90 100 99 30
29 Polysaccharides are also called Crystals Sugars Liquids None sugars
30 Iodine value of an oil or fat may be defined as The number of grams of iodine taken up by 1 g of the oil or fat The number of grams of iodine taken by 10 g of the oil or fat The number of grams of iodine taken by 100 g of the oil or fat None of the above
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