DCOA Mixed Practice Test #769

Question 1

Sphygmomanometer measures:

Accepted Answer

Blood pressure — Blood pressure.

Answer

Temperature

Answer

Blood sugar

Answer

Heart rate

Question 2

Total internal reflection requires:‌​‍

Accepted Answer

Light going from denser to rarer at angle > critical angle — Used in optical fibres, prisms. Diamond critical angle ~24.4° → brilliance.‌​‍

Answer

Light going from rarer to denser

Answer

Mirror

Answer

Perpendicular incidence

Question 3

Growth hormone deficiency:

Accepted Answer

Dwarfism — Pituitary dwarfism.

Answer

Gigantism

Answer

Cretinism

Answer

None

Question 4

Oersted's experiment showed:‌​‍

Accepted Answer

Current-carrying wire produces magnetic field — 1820. Direction by right-hand thumb rule. Unified electricity and magnetism.‌​‍

Answer

Voltage only

Answer

Magnetism produces current

Answer

Heat from current

Question 5

India's national tree is:‌​‍

Accepted Answer

Banyan — Indian Banyan (Ficus benghalensis) is the national tree.‌​‍

Answer

Peepul

Answer

Mango

Answer

Neem

Question 6

Brownian motion refers to:‌​‍

Accepted Answer

Random zigzag motion of colloidal particles in fluid — Observed by Robert Brown (1827); explained by Einstein via molecular collisions.‌​‍

Answer

Rotation of Earth

Answer

Orderly vibration

Answer

Tide movement

Question 7

KINFRA parks state:‌​‍

Accepted Answer

Industrial parks across state — Multiple industrial parks.‌​‍

Answer

Private

Answer

Only one

Answer

Cancelled

Question 8

A primary school teacher in Kerala observes that a student in Class 5 is struggling significantly and has not achieved the expected learning outcomes despite remedial efforts. According to the Right to Education Act, 2009, and its implementation in Kerala, what is the most appropriate action for the teacher to take regarding the student's promotion to Class 6?

Accepted Answer

C. Promote the student to Class 6, ensuring continuous and comprehensive evaluation (CCE) and providing additional support to help them catch up. — The Right to Education Act, 2009, enforces a 'no detention policy' up to Class 8, focusing on Continuous and Comprehensive Evaluation (CCE) rather than failing students. Therefore, the teacher must promote the student while ensuring ongoing academic support and remedial measures are provided within the school framework to help them achieve desired learning outcomes.

Answer

A. Detain the student in Class 5 to ensure mastery of foundational concepts before promotion.

Answer

B. Promote the student to Class 6 but recommend intensive remedial coaching outside school hours.

Answer

D. Refer the student for psychological counseling and special education assessment before making a promotion decision.

Question 9

Implantation of embryo occurs at:‌​‍

Accepted Answer

6-7 days after fertilisation — Blastocyst implants in endometrium. ‌​‍Pregnancy hormone hCG (detected in pregnancy test kits) starts production.

Answer

After 1 month

Answer

Immediately

Answer

Day 1

Question 10

Regarding the G20 Summit held in New Delhi in September 2023, which of the following initiatives was a significant outcome aimed at enhancing global connectivity and infrastructure development?

Accepted Answer

B. The announcement of the 'India-Middle East-Europe Economic Corridor' (IMEC). — The India-Middle East-Europe Economic Corridor (IMEC) was a landmark initiative announced during the G20 New Delhi Summit, aiming to connect India, the Middle East, and Europe through a network of railways and shipping lanes, enhancing trade and economic integration. Options A, C, and D were not primary outcomes of the G20 Summit focused on infrastructure development, with C being an aspirational goal not fully agreed upon, and A and D being unrelated to the core infrastructure theme.

Answer

A. The launch of the 'Global Carbon Offset Market' for heavy industries.

Answer

C. A commitment to phase out all fossil fuel subsidies by 2025 across all member nations.

Answer

D. The establishment of a G20 rapid response force for humanitarian crises.

DCOA Mixed Practice Test #769