Chemistry Test 57

Please wait...

Chemistry Test 57

Result

Chemistry Test 57

/

Score
-

Rank

Time Taken: -

Result frame illustration

Question 1/3
4 / -1

Allotropic form of phosphorous which show chemiluminescence

Correct

Wrong

Skipped
A
White phosphorous

Correct

Wrong

Skipped
B
Black phosphorous

Correct

Wrong

Skipped
C
Red phosphorous

Correct

Wrong

Skipped
D
All of the above
Question 2/3
4 / -1

Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statement is incorrect?

Correct

Wrong

Skipped
A
The ionic sizes of Ln(III) decreases in general with increasing atomic number

Correct

Wrong

Skipped
B
Ln(III) compounds are generally colorless

Correct

Wrong

Skipped
C
Ln(III) hydroxides are mainly basic in character

Correct

Wrong

Skipped
D
Because of the large size of the Ln(III) ions, the bonding in its compounds is perdominantly ionic in character
Question 3/3
4 / -1

True statement is

Correct

Wrong

Skipped
A
pH of normal rain water is 5.6

Correct

Wrong

Skipped
B
BOD (Biochemical demand) of clean water is 17 ppm

Correct

Wrong

Skipped
C
Excessive nitrate (>500 ppm) has laxative effect

Correct

Wrong

Skipped
D
All of these

Verify mobile number to view the solution

Solutions

H₂O + CO₂ → H₂CO₂ (Carbonic acud)

Get latest Exam Updates
& Study Material Alerts!

No, Thanks

Click on Allow to receive notifications

Notification bell icon

×

Open Now