Chemistry 10th Class English Medium Online Test With Answers

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Chemistry 10th Class English Medium Online Test

Sr. # Questions Answers Choice
1 Which one of the following salts makes the water permanently hard? NaCO<sub>3</sub> NaHCO<sub>3</sub> CA(HCO<sub>3</sub>)<sub>2</sub> CaSO<sub>4</sub>
2 Permanent hardness is removed by adding. Na<sub>2</sub> zeolite. Soda lime Lime water Quick lime
3 Temporary hardness is removed by adding. Quick lime Slaked lime Lime stone Lime water.
4 Temporary hardness is because of . Ca(HCO<sub>3</sub>)<sub>2</sub> CaCO<sub>3</sub> MgCO<sub>3</sub> MgSO<sub>4</sub>
5 Water dissolves non-ionic compound by Ion-ion forces Ion-dipole forces Dipole -dipole forces Hydrogen bonding.
6 Specific heat capacity of water is. 4.2 KJg<sup>-1</sup> K<sup>-1</sup> 4.2 Jg<sup>-1</sup>K<sup>-1</sup> 2.4 KJg<sup>-1</sup>K<sup>-1</sup> 2.4 Jg<sup>-1</sup>K<sup>-1</sup>
7 Which one of the properties of water is responsible for rising of water plants?. Specific heat capacity Surface tension Excellent solvent action Capillary action.
8 The solid particle deposit on the filter paper during filtratin is called. Precipitates Residue Crystals All of them
9 Thermosphere lies beyond. Stratosphere Troposphere Mesosphere Biosphere
10 Which is not a part of flue gas? Furans Dioxins HCl H<sub>2</sub>SO<sub>4</sub>
11 Incinerator reduces solid waste into . Ash Flue gas Heat All of them
12 The range of temperature in burning solid waste burning in incinerators is. 650 <sup>o</sup>C - 1000 <sup>o</sup>C 650<sup>o</sup>C - 11000<sup>o</sup>C 1000<sup>o</sup>C - 2000<sup>o</sup>C 650<sup>o</sup>C - 1000<sup>o</sup>C 5000<sup>o</sup>C - 1000<sup>o</sup>C
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