LGS Mixed Practice Test #448

Question 1

The physical quantity with unit 'candela' measures:‌​‍

Accepted Answer

Luminous intensity — Candela (cd) is the SI unit of luminous intensity.‌​‍

Answer

Electric current

Answer

Frequency

Answer

Amount of substance

Question 2

The image formed by a plane mirror is:‌​‍

Accepted Answer

Virtual, laterally inverted, same size — Plane mirror produces virtual image behind mirror, same size, laterally inverted.‌​‍

Answer

Diminished

Answer

Real, inverted

Answer

Magnified

Question 3

Who established the first printing press in Europe in the 15th century?

Accepted Answer

Johannes Gutenberg — Johannes Gutenberg set up the first movable-type press at Mainz (~1440).

Answer

William Caxton

Answer

Aldus Manutius

Answer

Nicolas Jenson

Question 4

Which blood cells fight infection?‌​‍

Accepted Answer

WBC — WBC (White Blood Cells / Leucocytes) fight infection as part of the immune system.‌​‍

Answer

RBC

Answer

Platelets

Answer

Plasma

Question 5

The first Chief Minister of Kerala, after state formation, was:‌​‍

Accepted Answer

E.M.S. Namboodiripad — EMS formed the first elected Kerala government in 1957 after the 1956 state formation.‌​‍

Answer

C. Achutha Menon

Answer

Pattom Thanu Pillai

Answer

R. Sankar

Question 6

What is the ideal temperature range that must be maintained for vaccines stored in an Ice-Lined Refrigerator (ILR) under the Universal Immunization Programme (UIP)?

Accepted Answer

D. +2°C to +8°C — The Universal Immunization Programme (UIP) mandates that vaccines must be stored within a strict temperature range of +2°C to +8°C to maintain their potency and effectiveness. Temperatures below +2°C can lead to freezing, which damages many vaccines, while temperatures above +8°C can reduce vaccine efficacy over time. Therefore, +2°C to +8°C is the ideal range for safe storage.

Answer

A. -2°C to +2°C

Answer

B. +8°C to +12°C

Answer

C. 0°C to +4°C

Question 7

Master endocrine gland:‌​‍

Accepted Answer

Pituitary (under control of hypothalamus) — Anterior: GH, TSH, ACTH, FSH, LH, prolactin. ‌​‍Posterior: ADH, oxytocin (stored, made in hypothalamus).

Answer

Thyroid

Answer

Pancreas

Answer

Adrenal

Question 8

Kannur University:

Accepted Answer

1996 — 1996.

Answer

2000

Answer

1990

Answer

2005

Question 9

Which inorganic salt is commonly used as a radiopaque contrast agent in medical imaging due to its high atomic number?

Accepted Answer

A. Barium sulfate (BaSO4) — Barium sulfate (BaSO4) is used as a radiopaque contrast agent because barium (Z=56) has a high atomic number, which absorbs X-rays effectively. The other options lack significant radiopacity for imaging purposes.

Answer

B. Sodium chloride (NaCl)

Answer

C. Potassium iodide (KI)

Answer

D. Calcium gluconate (C12H22CaO14)

Question 10

The chemical symbol for Gold is:‌​‍

Accepted Answer

Au — Gold's symbol is Au (from Latin 'Aurum'). Silver is Ag.‌​‍

Answer

Go

Answer

Gd

Answer

Ag

LGS Mixed Practice Test #448