DCOA Mixed Practice Test #674

Question 1

A teacher regularly uses exit tickets at the end of lessons to gauge student understanding and asks students to reflect on their learning challenges. This practice is most effective in promoting which of the following?

Accepted Answer

B. Self-regulated learning and metacognition. — Exit tickets and reflection prompts are formative assessment tools that encourage students to think about their own learning process, identify gaps, and take responsibility for their understanding. This fosters self-regulated learning and metacognition (thinking about one's thinking). While it can indirectly help with test readiness, its primary impact is on the learning process itself.

Answer

A. High-stakes testing readiness.

Answer

C. Standardized test score improvement.

Answer

D. Final examination grading accuracy.

Question 2

Panchayat term is:‌​‍

Accepted Answer

5 years — Panchayat term is 5 years. ‌​‍If dissolved, elections must be held within 6 months.

Answer

3 years

Answer

4 years

Answer

6 years

Question 3

Kerala BJP's first MP (Lok Sabha):‌​‍

Accepted Answer

Suresh Gopi 2024 — Suresh Gopi from Thrissur — first BJP MP from Kerala to LS.‌​‍

Answer

Rajeev Chandrasekhar

Answer

O Rajagopal

Answer

None

Question 4

The American Revolution led to independence from:‌​‍

Accepted Answer

Britain — The American Revolution (1775–1783) led to independence from British rule.‌​‍

Answer

Portugal

Answer

France

Answer

Spain

Question 5

For many orally administered drugs, the majority of absorption into the bloodstream occurs in which part of the digestive tract due to its large surface area?

Accepted Answer

C. Small intestine — The small intestine is the primary site for the absorption of most orally administered drugs. Its extensive surface area, provided by villi and microvilli, and its rich blood supply make it highly efficient for nutrient and drug absorption. The stomach is mainly involved in digestion, while the large intestine's primary role is water absorption, and the esophagus is a transport tube.

Answer

A. Esophagus

Answer

B. Stomach

Answer

D. Large intestine

Question 6

Trypsin works in:‌​‍

Accepted Answer

Small intestine — Protein digestion in alkaline medium.‌​‍

Answer

Large intestine

Answer

Stomach

Answer

Mouth

Question 7

Olympic frequency:‌​‍

Accepted Answer

4 years — Every 4 years.‌​‍

Answer

2 years

Answer

3 years

Answer

5 years

Question 8

The process of adding H₂ to unsaturated oils to convert them to solid fats is:‌​‍

Accepted Answer

Hydrogenation — Vegetable oils + H₂ (Ni catalyst) → saturated fats (vanaspati, margarine).‌​‍

Answer

Esterification

Answer

Saponification

Answer

Polymerisation

Question 9

The colour of light with the longest wavelength is:‌​‍

Accepted Answer

Red — Red has the longest wavelength in visible spectrum. ‌​‍Violet has the shortest. (VIBGYOR order).

Answer

Violet

Answer

Blue

Answer

Green

Question 10

What is the primary mechanism by which oxygen moves from the alveoli into the blood capillaries in the lungs?

Accepted Answer

D. Simple diffusion — Oxygen moves from the alveoli into the blood capillaries by simple diffusion. This process occurs because the partial pressure of oxygen is significantly higher in the alveoli than in the deoxygenated blood within the capillaries, creating a concentration gradient that drives oxygen across the alveolar and capillary membranes. Active transport requires energy and moves substances against a gradient, facilitated diffusion uses carrier proteins, and osmosis is specific to water movement.

Answer

A. Active transport

Answer

B. Facilitated diffusion

Answer

C. Osmosis

DCOA Mixed Practice Test #674