Chapter No. 5 CHEMICAL REACTIONS

Posted Posted in Chapter No. 5, Science 8

CHEMICAL REACTIONS: We have already learnt about elements and compounds which are the examples of pure matter. The substances such as hydrogen (H), oxygen (O) etc. are the elements while 2 2 water (HO), carbon dioxide (CO), etc., are the compounds. It is our daily observation 2 2 that water can be changed into ice. […]

chapter NO 5 Test 10

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.The following equation is properly balanced when: […]

chapter NO 5 Test 9

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Symbols and formulae of the reactants are […]

chapter NO 5 Test 8

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Which statement is wrong? a) Conversation of […]

chapter NO 5 Test 7

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Law of conservation of mass put forward […]

chapter NO 5 Test 6

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Which statement is wrong? a) Conversation of […]

chapter NO 5 Test 5

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.A change in a substance during which […]

chapter NO 5 Test 4

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Law of conservation of mass put forward […]

chapter NO 5 Test 3

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Crbon burns in air to release energy […]

chapter NO 5 Test 2

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Which is not a balaced equation? a) […]

chapter NO 5 Test 1

Posted Posted in Chapter No. 5, Science 8

Student’s Name:____________Admission No.______Roll No._____Section:______ Paper:: Science   Class: 8                   Time Allowed:    One Hour                           Marks: 15  Checked by:_______________ Rechecked by:_____________ Sign Invigilator:_____________ Q1. Circle the correct answer.  (10) 1.Which is not a balaced equation? a) […]