Chemistry 10th Class English Medium Unit 10 Online Test With Answers

image
image
image

Chemistry 10th Class English Medium Unit 10 Online Test

Sr. # Questions Answers Choice
1 The colour of litmus paper in strong acidic solution. Red Blue Yellow Colourless
2 The meaning of latin word acidus is. Sweet Tasteless Salty Sour
3 Acids turn Blue litmus red Red litmus blue Blue litmus green Blue litmus blue
4 Formula of Potassium ferrocyanide. K<sub>4</sub>[Fe(CN)<sub>6</sub>]<sup>-4</sup> K<sub>3</sub>[Fe(CN)<sub>4</sub>]<sup>-3</sup> K<sub>2</sub>[Fe(CN)<sub>6</sub>]<sup>-4</sup> K<sub>4</sub>[Fe(CN)<sub>5</sub>]<sup>-4</sup>
5 There are ____________ types of salts. 2 3 6 8
6 Which is used for cleaning agent for domestic and commercial purpose? NaCl Na<sub>2</sub>CO<sub>3</sub> NaHCO<sub>3</sub> Na<sub>2</sub>SiO<sub>3</sub>
7 Which salt is used for the manufacture of detergents, pulp and paper? NaCl Na<sub>2</sub>CO<sub>3</sub> Na<sub>2</sub>SiO<sub>3</sub> NaCl
8 Which salt is used as a table salt? NaCl Na<sub>2</sub>CO<sub>3</sub> Na<sub>2</sub>SiO<sub>3</sub> NaCl
9 Methyl orange produces which colour in basic solution Red Yellow Pink White
10 Phenolphthalein produces red colour in Acid Base Both a and b None of these
11 Indicators are the Inorganic compounds Organic compounds Ionic compounds Covalent compounds
12 Basic solution have pH value. Less than 7 Greater than 7 equal to 7 None of these
Download This Set