DCOA Mixed Practice Test #106

Question 1

How many Municipal Corporations are there in Kerala?‌​‍

Accepted Answer

6 — Kerala has 6 Municipal Corporations: Thiruvananthapuram, Kochi, Kozhikode, Thrissur, Kollam, and Kannur.‌​‍

Answer

4

Answer

5

Answer

7

Question 2

The blood group known as the 'Universal Recipient' is:‌​‍

Accepted Answer

AB — AB group is the universal recipient because it has both A and B antigens, so it can receive blood from any group. ‌​‍O is the universal donor.

Answer

B

Answer

O

Answer

A

Question 3

The Ezhava Memorial (1896), submitted to the Travancore Maharaja, was led by:‌​‍

Accepted Answer

Dr. Palpu — Dr. ‌​‍Padmanabhan Palpu led the Ezhava Memorial demanding equal rights for Ezhavas in government jobs.

Answer

Sree Narayana Guru

Answer

Sahodaran Ayyappan

Answer

T. K. Madhavan

Question 4

Largest artery:‌​‍

Accepted Answer

Aorta — Aorta.‌​‍

Answer

Pulmonary

Answer

Vena cava

Answer

Carotid

Question 5

A Higher Secondary Assistant (HSA) in Kerala conducts a formative assessment activity where students create a 'Concept Map' of a biology topic. Which statement about its purpose and evaluation is CORRECT?

Accepted Answer

B. It helps the teacher identify misconceptions in students' understanding and guide further instruction — Concept maps reveal how students connect ideas, helping teachers spot errors (e.g., 'photosynthesis releases energy'). Distractor A is wrong because maps assess cognitive structure, not creativity. Summative tools (e.g., grades) use written tests, not map complexity.

Answer

A. Concept maps are used exclusively to evaluate students' artistic creativity

Answer

C. Concept maps are a summative tool to assign grades based on map complexity

Answer

D. It is a standardised assessment to compare students across districts

Question 6

Haloalkanes on reaction with alcoholic KOH give:‌​‍

Accepted Answer

Alkene (E2 elimination) — Aqueous KOH gives alcohol (SN2). ‌​‍Saytzeff rule: more substituted alkene is major product.

Answer

Ether

Answer

Alcohol

Answer

Aldehyde

Question 7

Beaufort scale measures:‌​‍

Accepted Answer

Wind speed — Wind speed/intensity.‌​‍

Answer

Earthquake

Answer

Humidity

Answer

Temperature

Question 8

Largest producer of crude oil:‌​‍

Accepted Answer

USA — USA.‌​‍

Answer

Russia

Answer

Iran

Answer

Saudi

Question 9

Sulfonamide antibiotics exert their antibacterial action by inhibiting the synthesis of which essential bacterial metabolite?

Accepted Answer

B. Folic acid — Sulfonamides are structural analogs of para-aminobenzoic acid (PABA) and competitively inhibit the enzyme dihydropteroate synthase. This blockage prevents the synthesis of folic acid, which is essential for bacterial DNA and RNA synthesis, thereby inhibiting bacterial growth.

Answer

A. Peptidoglycan

Answer

C. DNA gyrase

Answer

D. Protein synthesis

Question 10

Hirakud Dam:‌​‍

Accepted Answer

Mahanadi (Odisha, world's longest earthen dam) — 26 km total length. Completed 1957. Irrigation, power, flood control.‌​‍

Answer

Narmada

Answer

Krishna

Answer

Ganga

DCOA Mixed Practice Test #106