Static GK. Chemistry. innovation. Assignment 01

Transcription

1 Static GK Chemistry innovation Assignment 01

2 Chemistry Practice Assignment 01 Direction for question 1-34:Mark the best option: 1. Fertiliser having high nitrogen content is : A) Urea B) Ammonium sulphate C) Ammonium nitrate D) Calcium citrate 2. Which of the following food items is rich in iron? A) Rice B) Apple C) Pulses D) Orange 3. Clear nights are colder than cloudy nights because of A) conduction B) Condensation C) Radiation D) insolation 4. The gas used in the artificial ripening of fruits is A) Acetylene B) Methane C) Ethane D) Butane 1

3 5. Mercury is generally used in thermometers because it has a A) high fluidity B) high density C) high conductivity D) high specific heat 6. When H2 gas is allowed to expand from a region of high pressure to a region of low pressure,the temperature of the gas A) decreases to a small extent B) increases C) does not changen D) decreases suddenly 7. Which of the following is used in pencils? A) Graphite B) Diamond C) Silicon D) Phosphorous 8. Liquid crystals are used in A) Pocket Calculator B) Display Devices C) Wrist watches D) All of the above 9. What is Zeolite? 2

4 A) Hydrated Aluminosilicate B) Hydrated Calcium Sulphate C) Dehydrated Aluminosilicate D) Dehydrated Calcium Sulphate 10. Stainless steel is an alloy of A) Iron, Carbon and Nickel B) Iron and Manganese C) Iron, Chromium and Zinc D) Iron, Chromium and Nickel E) None of these 11. Which one of the following is used as antifreeze in automobile engines? A) Propyl alcohol B) Ethanol C) Ethylene Glycol D) Methanol 12. Who was the only person to have ever won Nobel Prizes in both physics and chemistry? 3

5 A) Antoine Henri Becquerel B) Marie Sklodowska Curie C) YoichiroNambu D) Riccardo Giacconi 13. Which of the following destroys ozone? A) Carbon B) Chlorine C) Silicon D) Sulfur 14. Which of the following elements extensively exhibits Catenation? A) Carbon B) Oxygen C) Hydrogen D) Helium 15. Permanent hardness of water can be removed by adding A) chlorine B) washing soda C) potassium permanganate D) bleaching powder 16. The TV transmission process makes use of A) Infra-red waves B) FM waves 4

6 C) Audio-visual waves D) Ultra-sonic waves 17. Menthol tablets create a cooling effect by means of A) Distillation B) Evaporation C) Solidification D) Diffusion 18. The gas used for artificial fruit ripening of green fruit is A) Ethylene B) AcetyleneC) Ethane D) Methane 19. The substance which conducts current in the solid state is A) Diamond B) Graphite C) Iodine D) sodium chloride 20. Which of the following is the petroleum wax? A) Bees wax B) Carnauba wax C) Paraffin wax D) Jojoba wax 5

7 21. Which of the following can be used to absorb neutrons to control the chain reaction during nuclear fission? A) Boron B) Heavy water C) Uranium D) Plutonium 22. 'Milk of magnesia' is a suspension of A) Magnesium carbonate B) Magnesium hydroxide C) Magnesium chloride D) Magnesium sulphate 23. Which one of the following solution is used to test the ph of a given sample? A) Blue litmus solution B) universal indicator solution C) phosphorus solution D) sulphuric solution 24. What is the colour of pure diamond? 6

8 A) Light green B) Light yellow C) Light blue D) Light pink 25. What are the components responsible for acid rain? A) Nitrogen monoxide (NO) and carbon monoxide (CO) B) Sulphurdioxide(SO2) and Nitrogen oxides(nox) C)Carbon dioxide (CO2) and carbon monoxide (CO) D) Oxides of carbon (COX) and oxides of nitrogen (NOX) 26. What is used in storage batteries? A) Copper B) Tin C) Lead D) Zinc 27. Which of the following best represents baking soda? A) Potassium Carbonate B) Sodium Chloride C) Potassium Hydroxide 7

9 D) Sodium Bicarbonate 28. Leukemia is a disease relating to: A) Inflamation of joints B) Formation of blood clots C) Blood cancer D) Oral Cancer 29. What is the chemical name of Limestone? A) Calcium carbonate B) Sodium carbonate C) Calcium oxide D) Sodium bicarbonate 30. Which of the following material is almost extensively used for the filament of the electric bulb? A) Copper B) Tungsten C) Nichrome D) Aluminium 31. Plants absorb dissolved nitrates from the soil and convert them into:- A) Carbon Monoxide B) Oxygen C) Chlorophyll D) Free Nitrogen 8

10 32. The best variety of coal from the viewpoint of carbon content and its fuel value is A) Anthracite B) Lignite C) Peat D) Bituminous 33. You prefer wearing white-coloured clothing in the summer season. You do so because white clothes A) Absorb most radiations B) Reflect most radiations C) It is pleasant to look at D) None of these 34. Infra-red rays are waves of wavelength. A) Electromagnetic, long B) Mechanical, long C) Mechanical, short D) Electromagnetic, short 9

11 Chemistry Practice Assignment 01- Answer Key Q No. Key Q No. Key 1. A 18. B 2. B 19. B 3. C 20. C 4. A 21. A 5. C 22. B 6. B 23. B 7. A 24. A 8. B 25. B 9. A 26. C 10. D 27. D 11. C 28. C 12. B 29. A 13. B 30. B 14. A 31. D 15. B 32. A 16. B 33. B 17. B 34. A 10