DCOA Mixed Practice Test #629

Question 1

In SHM, acceleration is:‌​‍

Accepted Answer

Proportional to displacement, opposite direction — a = -ω²x. Restoring force F = -kx. Energy oscillates between KE and PE.‌​‍

Answer

Proportional to velocity

Answer

Zero

Answer

Constant

Question 2

The lens formula relates image distance v, object distance u, and focal length f as:‌​‍

Accepted Answer

1/f = 1/v − 1/u — Cartesian sign convention: 1/v − 1/u = 1/f for lenses.‌​‍

Answer

1/f = 1/v + 1/u

Answer

f = v − u

Answer

f = v + u

Question 3

Vector dot product a·b =

Accepted Answer

|a||b| cos θ — Scalar. If perpendicular, a·b = 0. Also = a₁b₁ + a₂b₂ + a₃b₃.

Answer

|a||b| sin θ

Answer

|a|+|b|

Answer

Always zero

Question 4

What is the critical structural feature responsible for the antibacterial activity of penicillins and cephalosporins?

Accepted Answer

B. Beta-lactam ring — The strained beta-lactam ring is essential for the antibacterial activity of penicillins and cephalosporins. It is the site of action for inhibiting bacterial cell wall synthesis by binding to penicillin-binding proteins. Its hydrolysis by bacterial beta-lactamases leads to drug inactivation.

Answer

A. Thiazolidine ring

Answer

C. Carboxyl group

Answer

D. Amide side chain

Question 5

N.V. Krishna Warrier:

Accepted Answer

Scholar-poet — Noted scholar-poet.

Answer

Actor

Answer

Politician

Answer

Economist

Question 6

Kottayam district since:

Accepted Answer

1956 — Formation at Kerala birth.

Answer

1947

Answer

1960

Answer

1970

Question 7

Chinnar Wildlife Sanctuary is known for which endangered species?

Accepted Answer

Grizzled Giant Squirrel — Chinnar in Idukki is one of the last habitats of the endangered Grizzled Giant Squirrel in Kerala.

Answer

Nilgiri Tahr

Answer

Lion-tailed Macaque

Answer

Malabar Civet

Question 8

Colour blindness is:‌​‍

Accepted Answer

X-linked recessive — more common in males — Red-green (most common). ‌​‍Males (XY): one X = affected if recessive. Females: carriers unless homozygous.

Answer

Autosomal dominant

Answer

Mitochondrial

Answer

Y-linked

Question 9

The Right to Education Act, 2009, mandates free and compulsory education for children aged 6 to 14 years. In the context of its implementation in Kerala, which of the following provisions is a crucial mechanism to ensure inclusive education as per the Act?

Accepted Answer

B. Kerala ensures that all private unaided schools reserve 25% of their entry-level seats for children belonging to weaker sections and disadvantaged groups, with reimbursement from the state. — Option B directly reflects a key provision of the RTE Act, which mandates 25% reservation in private unaided schools for economically weaker sections and disadvantaged groups, with the state reimbursing the schools. This is a crucial mechanism for inclusive education. Option A is not a mandatory provision of the RTE Act. Option C pertains to early childhood education (below 6 years), which is outside the 6-14 age group covered by RTE, though Anganwadis are important for overall child development. Option D is a policy initiative but not a core mandate of the RTE Act's free and compulsory educat

Answer

A. The state government has made it mandatory for all private schools to offer free transport facilities for students from marginalized communities.

Answer

C. The Anganwadi system in Kerala has been formally integrated into the primary education structure to extend the RTE benefits to children below 6 years.

Answer

D. Kerala has introduced a compulsory skill development program from Class V onwards to enhance employability, as part of the RTE framework.

Question 10

Which of the following is a key characteristic of Continuous and Comprehensive Evaluation (CCE) as implemented in schools?

Accepted Answer

B. It emphasizes evaluating both scholastic and co-scholastic aspects of a student's development. — CCE is designed to evaluate a student's development continuously over the academic year, covering both scholastic (academic) and co-scholastic (life skills, attitudes, values) areas. It moves beyond just annual exams and involves internal assessment by teachers, focusing on holistic development rather than just ranking.

Answer

A. It primarily focuses on assessing academic performance through annual examinations.

Answer

C. It is solely conducted by external examiners to ensure objectivity.

Answer

D. It aims to rank students based on their performance in competitive tests.

DCOA Mixed Practice Test #629