Question

1.Metals that can be cut with a knife * A.Potassium and Copper B.Sodium and Iron C.Sodium and Potassium D.Copper and Iron 2.Solution of a metal oxide- * A.turns red litmus blue B.none of these C.shows no colour change with blue litmus D.turns blue litmus red 3. Assertion (A): Metals are sonorous. Reason (R): Metals are generally brittle in solid state, they break into pieces when hammered. * 1.Both A and R are true and R is correct explanation of the assertion. 2.Both A and R are true but R is not the correct explanation of the assertion. 3.A is true but R is false. 4.A is false but R is true 4. Assertion (A):A statue made up of copper acquired a dull green coating on it after a couple of months. Reason (R): Copper does not react with dilute hydrochloric acid even on heating. * 1.Both A and R are true and R is correct explanation of the assertion. 2.Both A and R are true but R is not the correct explanation of the assertion. 3.A is true but R is false. 4.A is false but R is true

Answer 1

Metals that can be cut with a knife * A.Potassium and Copper B.Sodium and Iron C.Sodium and Potassium D.Copper and Iron 2.Solution of a metal oxide- * A.turns red litmus blue B.none of these C.shows no colour change with blue litmus D.turns blue litmus red 3. Assertion (A): Metals are sonorous. Reason (R): Metals are generally brittle in solid state, they break into pieces when hammered. * 1.Both A and R are true and R is correct explanation of the assertion. 2.Both A and R are true but R is not the correct explanation of the assertion. 3.A is true but R is false. 4.A is false but R is true 4. Assertion (A):A statue made up of copper acquired a dull green coating on it after a couple of months. Reason (R): Copper does not react with dilute hydrochloric acid even on heating. * 1.Both A and R are true and R is correct explanation of the assertion. 2.Both A and R are true but R is not the correct explanation of the assertion. 3.A is true but R is false. 4.A is false but R is true

 

Answer 2

Answer:

onorous. Reason (R): Metals are generally brittle in solid state, they break into pieces when hammered. * 1.Both A and R are true and R is correct explanation of the assertion. 2.Both A and R are true but R is not the correct explanation of the assertion. 3.A is true but R is false. 4.A is false but R is true 4. Assertion (A):A statue made up of copper acquired a dull green coating on it after a couple of months. Reason (R): Copper does not react with dilute hydrochloric acid even on heating. * 1.Both A and R are true and R is correct explanation of the assertion. 2.Both A and R are true but R is not the correct explanation of the assertion. 3.A is true but R is false

Explanation: