201: Assertion (A) :
Phenyl is used as a household germicide.
Reason (R):
Phenyl is a phenol derivative and phenol is an effective germicide.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Explanation:
Phenol is an effective germicide and as a derivative of phenol, phenyl also possesses germicidal property.
202: Which of the following elements are present in all proteins ?
I. Carbon
II. Hydrogen
III. Oxygen
IV. Nitrogen
Select the correct answer from the codes given below :
Codes :
(a) II and III
(b) I, II and IV
(c) I, III and IV
(d) I, II, III and IV
Explanation:
All the given elements viz. Carbon, Hydrogen, Oxygen and Nitrogen are constituents of proteins.
203: Fat is stored in the human body in:
(a) Muscular tissue
(b) Connective tissue
(c) Adipose tissue
(d) Epithelial tissue
204: Assertion (A) :
Sodium metal is stored under kerosene.
Reason (R):
Metallic sodium melts when exposed to air.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
205: With reference to 'Near Field Communication (NFC) Technology', which of the following statements is/are correct?
1. It is a contactless communication technology that uses electromagnetic radio fields.
2. NFC is designed for use by devices which can be at a distance of even a metre from each other
3. NFC can use encryption when sending sensitive information.
Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 Only
(c) 1 and 3 only
(d) 1, 2 and 3