Chemistry Test 149

Result

Chemistry Test 149

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The oxidation number of Cr is+ 6 in

A

B

C

D
Question 2
4 / -1

The oxidation number of carbon is+ 3 in

A
HCHO

B

C

D
Question 3
4 / -1

Suppose a compound contains atoms A,B and C. The oxidation number of A is+ 2, B is+ 5 and C is –2.The possible formula of the cmpound would be

A
ABC₂

B

C

D
Question 4
4 / -1

The oxidation number of phosphorus in its compounds varies from

A
–3 to+5

B
–1 to +1

C
–3 to –5

D
–5 to +1
Question 5
4 / -1

The rducing agent used in Thermit process is

A
BaO₂

B
Mg

C
Al

D
MnO₂
Question 6
4 / -1

For the redox reaction

A
x = 1, y = 5

B
x = 2, y = 10

C
x = 1, y = 20

D
x = 1, y = 15
Question 7
4 / -1

The oxidation number of sulphur in H₂SO₅ is

A
+7

B
+8

C
+4

D
+6
Question 8
4 / -1

The oxidation number of sulphur in H₂S₂O₈ is

A
+8

B
+6

C
+7

D
+4
Question 9
4 / -1

A sample of 2.5 mol of hydrazine (N₂H₄) loses 25 mol of electrons on being converted into a new compound X. Assuming that all of the nitrogen appears in the new compound, what is the oxidation state of nitrogen in compound X?

A
-1

B
-2

C
+3

D
+4
Question 10
4 / -1

The equivalent weight of nitrogen in the reaction

A
28

B
2.8

C
14

D
1.4