Chemistry - Online Test
Q1. Drugs that bind to the receptor site and inhibit its natural function are called
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. The
solubility of BaSO4 in water is 2.42 ×10-3
gL-1 at 298K. The value of its solubility product ( Ksp )
will be. (Given molar mass of BaSO4 =233g mol-1 )
Answer : Option C
Explaination / Solution:
BaSO4
↔ Ba2+
+SO42-
Ksp
=(s) (s)
Ksp =(s)2
= ( 2.42×10-3 g L-1
)2
= ( 2.42×10-3 g L-1
/ 233g mol-1 )
= ( 0.01038×10-3 )
2
= (1.038×10-5 )2
= 1.077×10-10
= 1.08×10-10 mol2
L-2
Q3. Which one of the following reaction represents calcinations?
Answer : Option C
Explaination / Solution:
No Explaination.
Q4.
The button cell used in watches function as follows
Answer : Option C
Explaination / Solution:
Anodic
oxidation: (Reverse the given reaction)
( Eoox ) = 0.76V cathodic reduction
∴ Ecell = ( Eoox )+ ( Eredo )
= 0.76 + 0.34 = 1.1V
= 1.1V
Q5. Which among the following is not a borane?
Answer : Option B
Explaination / Solution:
nido borane : BnH4+n
aracno borane : BnH6+n
Q6. Fog is colloidal solution of
Answer : Option C
Explaination / Solution:
dispersion
medium-gas dispersed phase-liquid
Q7. Solid (A) reacts with strong aqueous NaOH liberating a foul smelling gas(B) which spontaneously burn in air giving smoky rings. A and B are respectively
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. In
the reaction sequence, Ethene ----HOCl→A ---X→ ethan -1, 2 - diol . A and
X respectively are
Answer : Option C
Explaination / Solution:
Q9. Which one of the following
ions has the same number of unpaired electrons as present in V3+?
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. 
Product ‘X’ will not give
In the following reaction,
Product ‘X’ will not give
Answer : Option A
Explaination / Solution:
(x) reduces tollens reagent and Fehling solution and it also answers
iodoform test.
