DCOA Mixed Practice Test #526

Question 1

Vietnam War (US involvement) ended with:‌​‍

Accepted Answer

Fall of Saigon to North Vietnamese (April 1975) — US military withdrew 1973. ‌​‍Saigon fell to North Vietnam (April 1975). Vietnam reunified under communist rule.

Answer

Chinese takeover

Answer

Independence

Answer

US victory

Question 2

Which of the following best describes the 'Engage' phase of the 5E learning model in a constructivist classroom?

Accepted Answer

A. Students explore concepts through hands-on activities and inquiry to generate new questions. — The 'Engage' phase in the 5E model is designed to capture students' interest and stimulate curiosity by activating prior knowledge and posing questions. Option A aligns with this purpose, while B refers to the 'Explain' phase, C to 'Elaborate,' and D to 'Evaluate.'

Answer

B. The teacher provides direct instruction to clarify misconceptions and reinforce learning.

Answer

C. Students apply their understanding to new contexts through collaborative problem-solving.

Answer

D. The teacher assesses prior knowledge to identify gaps before introducing new content.

Question 3

The naval commander from Kerala who led resistance against the Portuguese in the 16th century was:‌​‍

Accepted Answer

Kunjali Marakkar — The Kunjali Marakkars were a dynasty of naval chiefs of the Zamorin of Calicut who fought against Portuguese colonial expansion in the 16th century. ‌​‍They are considered among the first naval defenders of India.

Answer

Pazhassi Raja

Answer

Pazhashi Raja

Answer

Velu Thampi Dalawa

Question 4

The process by which plants make food using sunlight is:‌​‍

Accepted Answer

Photosynthesis — Photosynthesis: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ (using sunlight and chlorophyll). ‌​‍Plants convert carbon dioxide and water into glucose and oxygen.

Answer

Respiration

Answer

Osmosis

Answer

Transpiration

Question 5

Gram-positive bacteria retain:‌​‍

Accepted Answer

Crystal violet stain due to thick peptidoglycan — Gram-negative have thin peptidoglycan + outer LPS membrane — take counterstain (safranin, pink). ‌​‍Gram stain developed 1884.

Answer

Safranin

Answer

Iodine only

Answer

No stain

Question 6

Vi (Vodafone Idea) situation:‌​‍

Accepted Answer

Strained financially — Continued financial difficulties.‌​‍

Answer

Thriving

Answer

Closed

Answer

Merged

Question 7

A teacher conducts a microteaching session to practice questioning skills. Which feedback focus would be most effective for improving student engagement?

Accepted Answer

A. The teacher's tone and body language during questioning — Effective questioning in microteaching should emphasize the teacher's delivery (tone, body language) as it directly impacts student engagement. While open-ended questions are important, the delivery style is more critical for immediate feedback and improvement.

Answer

B. The number of questions asked

Answer

C. The proportion of open-ended questions used

Answer

D. The time taken to answer each question

Question 8

What is the number of bit patterns provided by a 7-bit code?

Accepted Answer

128 — 2⁷ = 128 patterns.

Answer

512

Answer

256

Answer

64

Question 9

Thumba Equatorial Rocket Launching Station:‌​‍

Accepted Answer

TVM — India's first rocket launched here (1963).‌​‍

Answer

Chennai

Answer

Sriharikota

Answer

Bangalore

Question 10

Calicut University:

Accepted Answer

1968 — 1968.

Answer

1975

Answer

1980

Answer

1985

DCOA Mixed Practice Test #526