Chemical Reactions and Equations

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Chemical Reactions and Equations - 09

Email *

Name of Student *

Phone Number *

Date *

YYYY

School and City *

Q1. A chemical equation properly written has which of the following features? *

1 point

(i)Temperature required

(ii) Should be balanced

(iii) Should have information regarding physical states

(iv) All the above

Q2. A Chemical equation should be balanced to - *

1 point

(i) Display conservation of energy

(ii) Display conservation of mass

(iii) To make equation attractive

(iv) All the above

Q3. An unbalanced chemical equation is equation written in - *

1 point

(i) Skeletal form

(ii) Proper form

(iii) Simple form

(iv) Unorganized form

Q4. A chemical equation is said to be balanced if number of - *

1 point

(i) Compounds are same in both side

(ii) Molecules are same in both side

(iii) Number of atoms is same in both side

(iv) Number of electrons are same in both side

Q5. When magnesium is burnt in air then - *

1 point

(i) Magnesium is reacting with oxygen

(ii) Magnesium is reacting with nitrogen

(iii) Magnesium is reacting with carbon

(iv) Magnesium is reacting with Carbon di oxide

Q6. Write values of a,b and c if following chemical reaction is balanced aMg + bO2 → cMgO *

1 point

(i) a=1, b=2, c=2

(ii) a=2, b=1, c=2

(iii)a=2, b=2, c=2

(iv) a=1, b=2, c=1

Q7. Which of the following is not a physical change? *

1 point

a. Boiling of water to give water vapour

b. Melting of ice to give water

c. Dissolution of salt in water

d. Combustion of Liquefied Petroleum Gas (LPG)

Q8. The following reaction is an example of - 4NH3(g) + 5O2(g) ⇨ 4NO + 6H2O i. Displacement reaction ii. Combination reaction iii. Redox reaction iv. Neutralisation reaction *

1 point

a. (i) and (iv)

b. (ii) and (iii)

c. (i) and (iii)

d. (iii) and (iv)

Q9. Which of the following statements about the given reaction are correct? 3Fe (s) + 4H2O (g) ⇨ Fe3O4(s) + 4H2 (g) i. Iron metal is getting oxidised ii. Water is getting reduced iii. Water is acting as reducing agent iv. Water is acting as oxidising agent *

1 point

a. (i), (ii) and (iii)

b. (iii) and (iv)

c. (i), (ii) and (iv)

d. (ii) and (iv)

Q10. Which among the following statement(s) is (are) true? Exposure of silver chloride to sunlight for a long duration turnsgrey due to - i. The formation of silver by decomposition of silver chloride ii. Sublimation of silver chloride iii. Decomposition of chlorine gas from silver chloride iv. Oxidation of silver chloride *

1 point

a. (i) only

b. (i) and (iii)

c. (ii) and (iii)

d. (iv) only

A copy of your responses will be emailed to the address you provided.

Submit

Clear form

Never submit passwords through Google Forms.

reCAPTCHA

Privacy Terms

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy

Forms