DCOA Mixed Practice Test #682

Question 1

Sublimation:‌​‍

Accepted Answer

Solid→Gas — Direct solid to gas (e.g., dry ice, camphor).‌​‍

Answer

Solid→Liquid

Answer

Liquid→Gas

Answer

Gas→Liquid

Question 2

Electric current is the rate of flow of:

Accepted Answer

Electric charge — I = Q/t; current is charge flow per unit time.

Answer

Electrons only

Answer

Voltage

Answer

Resistance

Question 3

Contour lines on topographic map:

Accepted Answer

Join points of equal elevation — Spacing: close = steep slope; wide = gentle. Closed loops = hills or depressions (hachures for depression).

Answer

Roads

Answer

Boundaries

Answer

Rivers

Question 4

Kerala High Court established:

Accepted Answer

1958 — Kerala HC established 1958.

Answer

1947

Answer

1956

Answer

1960

Question 5

A teacher in a Kerala government school observes that one of her students, a child with low vision, is struggling to read the blackboard from the back of the classroom. Which of the following inclusive practices should the teacher prioritize first?

Accepted Answer

B. Providing the child with a magnifying glass and ensuring seating closer to the blackboard. — Inclusive education focuses on adapting the environment and teaching methods to meet the needs of all students within the mainstream classroom. Providing a magnifying glass and ensuring appropriate seating are direct, practical, and reasonable accommodations that allow the child to access the learning material independently. Other options either promote segregation, lower expectations, or create undue dependency, which are not primary inclusive practices.

Answer

A. Suggesting to the parents that they consider enrolling the child in a special school for visually impaired children.

Answer

C. Giving the child simplified assignments and exempting them from blackboard-based activities.

Answer

D. Asking a classmate to constantly assist the child by reading out everything written on the blackboard.

Question 6

Handwashing with soap and water is considered the most effective primary measure to prevent the spread of which type of infection?

Accepted Answer

C. Waterborne and foodborne diseases — Proper handwashing significantly reduces the transmission of pathogens causing gastrointestinal infections like cholera, typhoid, and various diarrheal diseases by removing microbes from hands before eating or preparing food. While important for general hygiene, it is not the primary defense against vector-borne, airborne, or sexually transmitted infections.

Answer

A. Vector-borne diseases like malaria

Answer

B. Airborne diseases like tuberculosis

Answer

D. Sexually transmitted infections

Question 7

Id, Ego, Superego (Freud):‌​‍

Accepted Answer

Id (pleasure), Ego (reality), Superego (morality/conscience) — Structural model. ‌​‍Ego mediates conflict. Anxiety from conflict → defense mechanisms.

Answer

Equal functions

Answer

Unrelated

Answer

Only conscious

Question 8

VSEPR theory is used to predict:‌​‍

Accepted Answer

Molecular geometry/shape — Electron pairs (bonding + lone) arrange to minimise repulsion. ‌​‍Predicts linear, bent, trigonal, tetrahedral, etc.

Answer

Nuclear stability

Answer

Electronic configuration

Answer

Atomic mass

Question 9

The first Indian to win the Nobel Prize was:‌​‍

Accepted Answer

Tagore — Rabindranath Tagore won the Nobel Prize in Literature in 1913 for Gitanjali.‌​‍

Answer

C.V. Raman

Answer

Mother Teresa

Answer

Amartya Sen

Question 10

Which of the following polymers is commonly used in the production of non-stick cookware coatings due to its high thermal stability and low surface energy?

Accepted Answer

B. Polytetrafluoroethylene (PTFE) — Polytetrafluoroethylene (PTFE) is the polymer used in non-stick coatings like Teflon due to its exceptional thermal stability (withstands temperatures up to 260°C) and very low coefficient of friction, making it ideal for cookware. Polyethylene has poor thermal stability, PVC degrades at high temperatures, and polypropylene lacks the necessary low surface energy for non-stick properties.

Answer

A. Polyethylene

Answer

C. Polyvinyl chloride (PVC)

Answer

D. Polypropylene

DCOA Mixed Practice Test #682