मराठी

Select the Odd One Out and Justify Your Answer. Fe, Zn, Cu and Mg - Chemistry

Advertisements
Advertisements

प्रश्न

Select the odd one out and justify your answer.

Fe, Zn, Cu and Mg

एका वाक्यात उत्तर
Advertisements

उत्तर

Cu

Metals more reactive than hydrogen can displace it from acids.

shaalaa.com
Application of Activity Series in the Preparation of Hydrogen
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 6: Study of the First Element - Hydrogen - Exercise 6 (D) [पृष्ठ ११२]

APPEARS IN

सेलिना Concise Chemistry [English] Class 9 ICSE
पाठ 6 Study of the First Element - Hydrogen
Exercise 6 (D) | Q 9.3 | पृष्ठ ११२

संबंधित प्रश्‍न

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

What do you observe when a few drops of red litmus solution are added to the turbid solution.


Choose the correct option:

Hydrogen is evolved by the action of cold dil. HNO3 on


Which metal is preferred for collecting hydrogen from Cold water? Write the balanced equation.


Give reason for the following:

Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen. 


When hydrogen is passed over a black solid compound A, the products are a 'colorless liquid' and a 'reddish-brown metal B'.

Substance B is divided into two parts each placed in separate test tubes.

Dilute HCl is added to one part of substance B and dilute HNO3 to the other.

  1. Name the substances A and B.
  2. Give two tests for the colourless liquid formed in the experiment.
  3. What happens to substance A when it reacts with hydrogen? Give reasons for your answer.
  4. Write an equation for the reaction between hydrogen and substance A.
  5. Is there any reaction between substance B and dilute hydrochloric acid? Give reasons for your answer.

Give a reason for the following.

Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.


Correct the following statement:

Very dilute nitric acid reacts with iron to produce hydrogen.


What do you observe when dilute sulphuric acid is added to Zinc granules.


Using dilute sulphuric acid how would you differentiate between:

Copper and magnesium

How would you identify the gaseous products evolved.


State why hydrogen is not prepared in the laboratory by the action of calcium with dilute sulphuric acid.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×