DCOA Mixed Practice Test #490

Question 1

Cyclotron frequency of charged particle in B:‌​‍

Accepted Answer

f = qB/(2πm) — Independent of velocity (non-relativistic). ‌​‍Used to accelerate charged particles.

Answer

f = qBv

Answer

f = m/qB

Answer

f = B

Question 2

Which among the following factors is NOT a primary consideration for selecting an appropriate container for a sterile ophthalmic solution?

Accepted Answer

C. Glass transition temperature — Glass transition temperature is a property related to polymers and plastics, not typically a primary consideration for sterile ophthalmic containers. The other options (pH compatibility, light transmission, and leak-proof closure) are critical for maintaining sterility and drug stability.

Answer

A. pH compatibility

Answer

B. Light transmission properties

Answer

D. Leak-proof and tamper-evident closure

Question 3

Who was the founder of Pratyaksha Raksha Daiva Sabha?

Accepted Answer

Poikayil Yohannan — Poikayil Yohannan (Sri Kumaragurudevan) founded PRDS in 1909.

Answer

Thycaud Ayya

Answer

Pandit Karuppan

Answer

Chattampi Swami

Question 4

PACE, launched by NASA on 8 February 2024, stands for:‌​‍

Accepted Answer

Plankton, Aerosol, Cloud, ocean Ecosystem — PACE = Plankton, Aerosol, Cloud, ocean Ecosystem — NASA Earth-science satellite.‌​‍

Answer

Plankton, Aerosol, Cloud, Ecosystem

Answer

Plankton, Algae, Cloud, ocean Ecosystem

Answer

Plankton, Atomiser, Cloud, Ecosystem

Question 5

OpenAI CEO 2023-24 drama:‌​‍

Accepted Answer

Sam Altman fired and reinstated — Nov 2023 drama.‌​‍

Answer

Replaced

Answer

Stayed

Answer

Merged

Question 6

Elevated levels of serum amylase and lipase are highly indicative of inflammation or damage to which organ?

Accepted Answer

C. Pancreas — Amylase and lipase are digestive enzymes primarily produced by the pancreas. Significantly elevated levels of both enzymes in the serum are highly specific and sensitive indicators of acute pancreatitis or other pancreatic damage. Other organs like the gallbladder, stomach, or spleen do not release these enzymes in high concentrations in response to inflammation.

Answer

A. Gallbladder

Answer

B. Stomach

Answer

D. Spleen

Question 7

Speed of electromagnetic waves in vacuum:

Accepted Answer

3 × 10⁸ m/s — c = 1/√(μ₀ε₀). Maxwell predicted; Hertz confirmed. All EM waves travel at c in vacuum.

Answer

3 × 10⁶

Answer

1.5 × 10⁸

Answer

3 × 10¹⁰

Question 8

The modern atomic theory was first proposed (1808) by:‌​‍

Accepted Answer

John Dalton — John Dalton (1808) proposed that matter is made of indivisible atoms — foundation of modern atomic theory.‌​‍

Answer

Niels Bohr

Answer

J. J. Thomson

Answer

Aristotle

Question 9

Which of the following is NOT an SI base unit?

Accepted Answer

Newton — Newton is a derived unit (kg·m/s²). SI base units are m, kg, s, A, K, mol, cd.

Answer

Metre

Answer

Kilogram

Answer

Second

Question 10

During the feedback session of a microteaching cycle, a supervisor provides specific, actionable suggestions to a trainee on how to improve their 'Questioning' skill. What is the primary purpose of this type of feedback in microteaching?

Accepted Answer

B. To identify areas for improvement and guide the trainee in re-planning the lesson. — The primary purpose of feedback in microteaching is formative; it aims to provide constructive criticism to help the trainee identify weaknesses and strengths in their performance. This feedback is crucial for guiding the trainee in re-planning and subsequently re-teaching the lesson more effectively, leading to skill refinement rather than summative assessment or comparison.

Answer

A. To evaluate the trainee's overall teaching aptitude for final assessment.

Answer

C. To compare the trainee's performance with other trainees in the group.

Answer

D. To ensure strict adherence to a pre-defined script for the micro-lesson.

DCOA Mixed Practice Test #490