LGS Mixed Practice Test #107

Question 1

Who wrote Krishnagatha?‌​‍

Accepted Answer

Cherusseri — Cherusseri Namboothiri — Father of Malayalam poetry.‌​‍

Answer

Poonthanam

Answer

Melpathur

Answer

Ezhuthachan

Question 2

A crucial aspect of preventing the spread of infectious diseases in both community and healthcare settings is proper hand hygiene. What is the primary reason for vigorously rubbing hands with soap and water or an alcohol-based sanitizer?

Accepted Answer

B. To physically remove or inactivate microorganisms — The primary purpose of vigorous hand rubbing with soap and water or an alcohol-based sanitizer is to physically dislodge, wash away, or inactivate transient microorganisms present on the skin surface. This action effectively reduces the microbial load and prevents the transmission of infectious agents, which is critical for disease prevention. Other options are secondary or incorrect reasons.

Answer

A. To make hands smell pleasant

Answer

C. To moisturize the skin and prevent dryness

Answer

D. To increase blood circulation in the hands

Question 3

When resistors are connected in parallel, the total resistance:‌​‍

Accepted Answer

Is less than the smallest individual resistance — Parallel reduces total R; 1/R = Σ1/Rᵢ.‌​‍

Answer

Equals sum

Answer

Equals the largest resistance

Answer

Is infinity

Question 4

International Yoga Day is observed on:‌​‍

Accepted Answer

21 June — UN declared 21 June as International Yoga Day from 2015 (proposed by India).‌​‍

Answer

21 May

Answer

21 September

Answer

21 July

Question 5

44th Amendment replaced 'internal disturbance' with:‌​‍

Accepted Answer

Armed rebellion — 'Armed rebellion' — stricter condition for emergency.‌​‍

Answer

Civil war

Answer

War

Answer

External aggression

Question 6

Technetium-99m (Tc-99m) is a widely used radioisotope in diagnostic imaging. What is its primary advantage for this purpose?

Accepted Answer

C. It has a short half-life and emits gamma rays suitable for external detection — Technetium-99m is ideal for diagnostic imaging due to its relatively short half-life (6 hours), which minimizes patient radiation exposure after the procedure. Crucially, it emits pure gamma rays, which can be easily detected by external gamma cameras and provide high-resolution images without significant tissue damage. Alpha particles are highly damaging and unsuitable for diagnostic imaging.

Answer

A. It has a very long half-life, allowing for extended imaging

Answer

B. It emits alpha particles, providing high tissue penetration

Answer

D. It is inexpensive to produce in large quantities

Question 7

SCTIMST:

Accepted Answer

Sree Chitra Tirunal Institute of Medical Science — Autonomous institute under DST.

Answer

Private

Answer

Pvt

Answer

Both

Question 8

During a Gram staining procedure, a microbiologist observes purple-colored, rod-shaped bacteria under the microscope. Based on this observation, how would these bacteria be classified?

Accepted Answer

C. Gram-positive bacilli. — Gram-positive bacteria retain the crystal violet stain due to their thick peptidoglycan layer, appearing purple under the microscope. Rod-shaped bacteria are referred to as bacilli. Therefore, purple, rod-shaped bacteria are classified as Gram-positive bacilli. Gram-negative bacteria would appear pink or red, and cocci are spherical, not rod-shaped.

Answer

A. Gram-positive cocci.

Answer

B. Gram-negative bacilli.

Answer

D. Gram-negative cocci.

Question 9

Milk teeth count:

Accepted Answer

20 — 20 deciduous teeth.

Answer

18

Answer

24

Answer

28

Question 10

Headquarters of KILA is at:‌​‍

Accepted Answer

Thrissur — Kerala Institute of Local Administration is at Mulagunnathukavu, Thrissur.‌​‍

Answer

Ernakulam

Answer

Kozhikode

Answer

Kottayam

LGS Mixed Practice Test #107