Chemistry - Online Test

Q1. Sc( Z=21) is a transition element but Zinc (z=30) is not because
Answer : Option B
Explaination / Solution:
No Explaination.


Q2. According to Dalton’s atomic theor
Answer : Option A
Explaination / Solution:

Dalton was developed the theory of the structure of matter and this theory is known as Dalton’s atomic theory. His research was based on experiments and also from law of chemical combination. Dalton’s atomic theory was quickly explained the many heretofore unexplained chemical phenomena. Dalton’s atomic theory quickly became the theoretical foundation in chemistry. Dalton’s atomic theory stated that: All the matter is made of atoms which are tiny particles and indivisible. All the given atom of the element is identical in mass, size, shape, and in other properties. All different elements have different types of atoms and also different in their mass, size, shape, and in other properties. All the atom of an element cannot be made or destroyed.

Q3. In leech locomotion is performed by
Answer : Option D
Explaination / Solution:
No Explaination.


Q4.

For the following reactions

(A) CH3CH2CH2Br + KOH CH2 = CH2 + KBr +H2O

(B) (CH3)3CBr + KOH (CH3)3 COH + KBr

(C) 

Which of the following statement is correct?

Answer : Option D
Explaination / Solution:
No Explaination.


Q5. Active transport involves
Answer : Option D
Explaination / Solution:
No Explaination.


Q6. The correct structure of the product ‘A’ formed in the reaction  is
Answer : Option B
Explaination / Solution:
No Explaination.


Q7. 40 ml of methane is completely burnt using 80 ml of oxygen at room temperature The volume of gas left after cooling to room temperature is
Answer : Option A
Explaination / Solution:

CH4(g) + 2O2(g) → CO2 (g)+ 2 H2O (l)



Since the product was cooled to room temperature, water exists mostly as liquid. Hence, option (a) is correct


Q8. The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is
Answer : Option B
Explaination / Solution:
No Explaination.


Q9. Bipolar neurons are found in
Answer : Option A
Explaination / Solution:
No Explaination.


Q10. The sum of primary valance and secondary valance of the metal M in the complex [ M ( en)2 ( Ox)] Cl is L
Answer : Option D
Explaination / Solution:

In the complex [M (en)2 (Ox)] Cl For the central metal ion M3+

The primary valance is = +3

The secondary valance = 6

sum of primary valance and secondary valance = 3+6 = 9