Q. 66. Antibiotic Penicillin was discovered by
(A) Edward Jenner
(B) Alexander Fleming
(C) Robert Koch
(D) Joseph Lister
Answer:
(B) Alexander Fleming
Explanation:
Sir Alexander Fleming discovered the first widely effective antibiotic substance, penicillin, in 1928 from the mold Penicillium notatum.
Q. 67. Which of the following is the first word processor application?
(A) MS Word
(B) Apple i work
(C) WordStar
(D) WordPerfect
Answer:
(C) WordStar
Explanation:
Released in 1979, WordStar was one of the earliest and most popular commercial word processing software applications for microcomputers.
Q. 68. Which of the following is volatile memory in a computer system?
(A) RAM
(B) ROM
(C) Optical Drive
(D) Hard Disk
Answer:
(A) RAM
Explanation:
Random Access Memory (RAM) is volatile, meaning it requires power to maintain the stored information and loses its data when power is turned off.
Q. 69. One Tera Byte = ?
(A) 1028 Megabytes
(B) 1024 Gigabytes
(C) 1024 Kilobytes
(D) 1028 Gigabytes
Answer:
(B) 1024 Gigabytes
Explanation:
In standard computing binary terms, 1 Terabyte (TB) is equivalent to 1024 Gigabytes (GB).
Q. 70. Rickets is caused by the deficiency of
(A) Vitamin A
(B) Vitamin D
(C) Vitamin C
(D) Iodine
Answer:
(B) Vitamin D
Explanation:
Rickets is a childhood bone disorder characterized by softening and weakening of the bones, primarily resulting from a severe lack of Vitamin D.
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