What is the correct chemical name of ${Na}_{2} {ZnO}_{2}$ ?

58.33% studentsanswered this correctly

Important Questions on Metals and Non-metals

MEDIUM

10th CBSE

IMPORTANT

PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 3 - Metals and Non-metals>PRACTICAL SKILL BASED MCQs>Q 8

A student added dil.

HCl

to a test tube containing

Zn

granules and made following observations:
(i) Zinc surface become dull and black.
(ii) A gas evolved which burn with a pop sound.
(iii) The solution remained colourless.

MEDIUM

10th CBSE

IMPORTANT

PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 3 - Metals and Non-metals>PRACTICAL SKILL BASED MCQs>Q 9

Which one of the following will form coloured solution in water?

EASY

10th CBSE

IMPORTANT

PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 3 - Metals and Non-metals>PRACTICAL SKILL BASED MCQs>Q 10

Some crystals of copper sulphate were dissolved in water. The colour of the solution obtained would be

MEDIUM

10th CBSE

IMPORTANT

PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 3 - Metals and Non-metals>PRACTICAL SKILL BASED MCQs>Q 11

Four students of a practical group a, b, c, d were assigned the experiment of reaction of iron nails with copper sulphate separately, which one of the students of group recorded all the correct observations.

Student Initial colour of solution. Final colour of solution.

HARD

10th CBSE

IMPORTANT

PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 3 - Metals and Non-metals>PRACTICAL SKILL BASED MCQs>Q 12

When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change which is observed is

MEDIUM

10th CBSE

IMPORTANT

PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 3 - Metals and Non-metals>PRACTICAL SKILL BASED MCQs>Q 13

Pieces of zinc metal are added to four different test tubes containing different solutions, in which test tube no change will be observed?

HARD