DCOA Mixed Practice Test #650

Question 1

Which of the following is a key function of Vitamin D in the body?

Accepted Answer

B. Regulating calcium and phosphate metabolism — Vitamin D's primary role is to regulate calcium and phosphate absorption and metabolism, maintaining bone health. It does not enhance iron absorption (A, Vitamin C does), nor is it directly involved in collagen synthesis (C, Vitamin C is) or antioxidant activity (D, Vitamin E/C are).

Answer

A. Enhancing iron absorption

Answer

C. Participating in collagen synthesis

Answer

D. Acting as an antioxidant

Question 2

Pasteurisation of milk kills bacteria using:‌​‍

Accepted Answer

Heat followed by rapid cooling — Milk heated to 63–72 °C then rapidly cooled — preserves nutrients and reduces microbes.‌​‍

Answer

Pressure

Answer

Freezing

Answer

UV light

Question 3

Under the Right to Education (RTE) Act, 2009, what is the minimum age range for admission to elementary education?

Accepted Answer

B. 6 to 14 years — The RTE Act mandates free and compulsory education for children aged 6 to 14 years. Option A is incorrect as 3 years is below the start age, while C and D include age ranges outside the specified bracket.

Answer

A. 3 to 10 years

Answer

C. 5 to 12 years

Answer

D. 4 to 11 years

Question 4

Unified Pension Scheme (UPS) announced in 2024 guarantees:‌​‍

Accepted Answer

50% of average basic pay as pension — UPS guarantees 50% of the average basic pay of the last 12 months as pension for 25+ years of service.‌​‍

Answer

Only lump sum

Answer

60% of last drawn salary

Answer

Full salary as pension

Question 5

Slope of line through (x₁,y₁) and (x₂,y₂):

Accepted Answer

(y₂-y₁)/(x₂-x₁) — Rise over run. Parallel lines: equal slopes. Perpendicular: product = -1.

Answer

y₂-y₁

Answer

x₂-x₁

Answer

y/x

Question 6

The powerhouse of the cell is:

Accepted Answer

Mitochondrion — Mitochondria produce ATP via cellular respiration — the cell's energy currency.

Answer

Nucleus

Answer

Ribosome

Answer

Golgi apparatus

Question 7

An insectivorous plant example is:‌​‍

Accepted Answer

Pitcher plant / Venus flytrap — Insectivorous plants supplement nitrogen-poor soils by trapping insects.‌​‍

Answer

Mango

Answer

Rose

Answer

Cactus

Question 8

The plan-monitoring software developed by Information Kerala Mission for LSG Department is:‌​‍

Accepted Answer

Sulekha — 'Sulekha' tracks annual decentralised plan projects of local governments.‌​‍

Answer

Sugama

Answer

Sanchaya

Answer

Samvedhitha

Question 9

The liver plays a vital role in detoxifying ammonia, a toxic byproduct of protein metabolism, by converting it into a less toxic substance for excretion. This substance is:

Accepted Answer

B. Urea — The liver is the primary site for the urea cycle, which converts highly toxic ammonia, produced from amino acid deamination, into less toxic urea. Urea is then transported to the kidneys for excretion in urine. Glucose is a carbohydrate, bilirubin is a heme breakdown product, and ketone bodies are produced during fat metabolism.

Answer

A. Glucose

Answer

C. Bilirubin

Answer

D. Ketone bodies

Question 10

In a Kerala village, the local self-government (Gram Panchayat) has decided to implement a community health program focusing on elderly care. Which social group is MOST likely to benefit from this initiative?

Accepted Answer

C. Senior citizens above 60 years — Elderly care programs specifically target senior citizens above 60 years, addressing their unique health and social needs. The other options (A, B, D) represent different demographic groups with distinct health priorities.

Answer

A. School-going children

Answer

B. Pregnant women

Answer

D. Adolescent boys

DCOA Mixed Practice Test #650