Q: 1 Gigabyte (GB) is equal to:

A: 1024 bytes

B: 1024 KB

C: 1024 MB

D: 1024 TB



Correct Option: C  [ 1024 MB ]

Remark:

Explanation: 1 Gigabyte (GB) is equal to 1024 Megabytes (MB). Computer memory and storage are measured in powers of 2 (binary system), where 1 KB = 1024 bytes, 1 MB = 1024 KB, and 1 GB = 1024 MB.


Q: Which of the following is not a property of heavy water ?

A: Boiling point of heavy water is lower than that of ordinary water

B: density of heavy water is higher than that of ordinary water

C: freezing point of heavy water is higher than that ordinary water

D: it produces corrosion



Correct Option: A  [ Boiling point of heavy water is lower than that of ordinary water ]

Remark:


Q: Widal test is employed to diagnose:

A: Typhoid

B: Cholera

C: Tuberculosis

D: AIDS



Correct Option: A  [ Typhoid ]

Remark:

The Widal test is used to diagnose Typhoid fever, a bacterial infection caused by Salmonella typhi. The test detects the presence of agglutinating antibodies (O and H) in a patient’s serum against the antigens of the typhoid bacteria. It helps confirm infection during the second week of illness.

  • Cholera: Diagnosed by stool culture for Vibrio cholerae.
  • Tuberculosis: Detected using sputum test or Mantoux test.
  • AIDS: Diagnosed through ELISA or Western blot test for HIV.


Q: Iodoform is used as an:

A: antipyretic

B: analgesic

C: antiseptic

D: anaesthetic



Correct Option: C  [ antiseptic ]

Remark:


Q: Which one of the following solutions will not turn blue litmus to red litmus?

A: Lemon juice

B: Acetic acid

C: Sodium hydroxide

D: Hydrochloric acid



Correct Option: C  [ Sodium hydroxide ]

Remark:

Explanation: Sodium hydroxide (NaOH) is a base, so it does not turn blue litmus paper red. Instead, it turns red litmus paper blue. In contrast, lemon juice, acetic acid, and hydrochloric acid are acidic and turn blue litmus red.


Q: The Kala-azar disease in man is spread by the bite of a:

A: Culex Mosquito

B: Phlebotomus sandfly

C: Climex bed-bug

D: Sarcoptes mites



Correct Option: B  [ Phlebotomus sandfly ]

Remark:

Explanation: Kala-azar, also known as visceral leishmaniasis, is caused by the protozoan parasite Leishmania donovani. It is transmitted through the bite of the female Phlebotomus sandfly. The disease primarily affects the liver, spleen, and bone marrow, leading to symptoms such as fever, anemia, weight loss, and darkening of the skin. The term “Kala-azar” literally means “black fever.”


Q: The longest day in the southern Hemisphere is on :

A: 22nd December

B: 21st June

C: 21st March

D: 23rd September



Correct Option: A  [ 22nd December ]

Remark:

Explanation: The longest day in the Southern Hemisphere occurs on 22nd December, which marks the Summer Solstice in that hemisphere. On this date, the South Pole is tilted toward the Sun, resulting in longer daylight hours and shorter nights. Conversely, at the same time, the Northern Hemisphere experiences its winter solstice—the shortest day and longest night of the year. After 22nd December, the days in the Southern Hemisphere gradually begin to shorten.


Q: In which part of the human body carpal bones are found ?

A: Wrist

B: Femur

C: Neck

D: None of these



Correct Option: A  [ Wrist ]

Remark:

Explanation: Carpal bones are the eight small bones that make up the wrist (also known as the carpus) in the human skeletal system. These bones are arranged in two rows — a proximal row (closer to the forearm) and a distal row (closer to the hand). They connect the bones of the forearm (radius and ulna) to the bones of the hand (metacarpals) and allow for the flexibility and movement of the wrist. The carpals are essential for various hand motions like bending, rotation, and gripping.


Q: The time period of a pendulum when taken to the Moon would:

A: remain the same

B: decrease

C: become zero

D: increase



Correct Option: D  [ increase ]

Remark:

Explanation: The time period of a simple pendulum is given by the formula T = 2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. Since the Moon’s gravity is about 1/6th of Earth’s, the value of g decreases, causing the time period to increase.


Q: The layer of the atmosphere in which Radio Waves are reflected back is called:

A: Exosphere

B: Ionosphere

C: Troposphere

D: Stratosphere



Correct Option: B  [ Ionosphere ]

Remark:
1...