10th class Chemistry chapter 15 online mcq test with answers for matric part 2 chemistry unit 15(Water Preparation)

Chemistry 10th Class English Medium Unit 15 Online Test

Sr. #	Questions	Answers Choice
1	Temporary hardness can be removed by__________.	Quick lime Slaked lime Lime stone HCl
2	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>
3	Which ion cause water hardness?	Al<sup>2</sup> Mg<sup>2</sup> Fe<sup>2</sup> Na<sup>2</sup>
4	Water dissolves Non-ionic compounds by:	Ion-Ion forces Dipole forces Dipole - Dipole forces Hydrogen Bonding
5	The bond angle between H-O-H in water is:	104.5<sup>o</sup> 104.6<sup>o</sup> 104.7<sup>o</sup> 104.8<sup>o</sup>
6	Ionic compounds are soluble in water due to:	Hydrogen bonding ion-dipole forces Dipole-dipole forces Dipole -induced dipole forces
7	Water molecule has a structure:	Ionic Non polar Tetrahedral Polar
8	A sea level the boiling point of water is.	0<sup>o</sup>C 98<sup>o</sup>C 100<sup>o</sup>C 110<sup>o</sup>C
9	Which process is responsible for ascending of water in plants from roots to leaf?	Condensatin Transpiration Capillary action Evaporation
10	Which one of the following properties of water is responsible for rising of water in plants?	Specific heat capacity Viscosity Excellent solvent action Capillary action
11	Boiling point of water is:	0<sup>o</sup>C 25<sup>o</sup>C 80<sup>o</sup>C 100<sup>o</sup>C
12	At which temperature o water shows mxamimum density.	0 <sup>o</sup>C 100<sup>o</sup>C 4<sup>o</sup>C -4<sup>o</sup>C