9th Class Chemistry Chapter Wise Online MCQ Test With Answers PDF English Medium

Chemistry 9th Class English Medium Online Test

Sr. #	Questions	Answers Choice
1	Bond formation energy of one O-H bond is............	488 kJ/mol 484 kJ/mol 486 kJ/mol 489 kJ/mol
2	If the Delta H value is negative then reaction witll be	Endotermic Exothermic May or may not be exothermic or endothermic None of these
3	The enthalpy of reaction H2+I2--- 2HI	-571.6 k J +53.8 kJ 11 kJ -393.5 kJ
4	The enthalpy of reaction 2H2 +O2-----2H2O	-571.6 kJ -110.5 kJ -393.5 kJ +53.8 kJ
5	The enthalpy of reaction C+O2 ------ CO2	-571.6 kJ -393.5 kJ +53.8 kJ -110.5 kJ
6	The part of the universe that we want to focus our attention called.	Surrounding Energy System Both a and b
7	The word energy is used in physics ofr the firt time.	1902 1858 1805 1802
8	Who use the word energy for the 1st time	Rutherford Bohr Thomas Young None of these
9	All chemical reaction involves.	Enzymes Catalyst Energy changes All of these
10	When NaOH and HCl are mixed the temperature increases. The reaction	Exothermic with a negative enthalpy chagne. Endothermic with a positive enthaly change. Endothermic with a negatie enthalpy change Exothermic with a positive enthealpy change
11	When new bonds ae formed, the energy is	Consume Remain same Release None of these
12	When old bonds are broken, the energy is.	Release Remain same Consume None of these