DCOA Mixed Practice Test #117

Question 1

Longest bone in body:‌​‍

Accepted Answer

Femur — Femur (thigh bone).‌​‍

Answer

Fibula

Answer

Tibia

Answer

Humerus

Question 2

Which organ stores bile produced by the liver?‌​‍

Accepted Answer

Gallbladder — The Gallbladder stores bile produced by the Liver. ‌​‍Bile is released into the small intestine to help digest fats.

Answer

Spleen

Answer

Stomach

Answer

Pancreas

Question 3

Which literary form is best suited for teaching moral values and ethical dilemmas to high school students?

Accepted Answer

C. Fables — Fables are short, allegorical stories designed to impart moral lessons, making them ideal for classroom discussions on ethics and values. While drama and novels can explore moral themes, they are often longer and more complex. Biographies focus on real-life events rather than moral instruction.

Answer

A. Drama

Answer

B. Biographies

Answer

D. Novels

Question 4

Which of the following rivers is NOT a tributary of the Bharathapuzha river system in Kerala?

Accepted Answer

D. Periyar — The Bharathapuzha river system is formed by the confluence of several tributaries, including Kalpathipuzha, Gayathripuzha, and Chulliyar. The Periyar river, however, is an independent river system flowing in central Kerala and does not join the Bharathapuzha. Distractor 'A' is a major tributary, 'B' is a significant left-bank tributary, and 'C' is a right-bank tributary.

Answer

A. Kalpathipuzha

Answer

B. Gayathripuzha

Answer

C. Chulliyar

Question 5

The process by which beneficial soil bacteria convert nitrogen gas to usable nitrates is:‌​‍

Accepted Answer

Nitrogen fixation — Rhizobium (in root nodules of legumes) and Azotobacter fix atmospheric N₂ into NH₃/NO₃⁻.‌​‍

Answer

Denitrification

Answer

Ammonification

Answer

Nitrification

Question 6

The 'Kerala Sangeetha Nataka Akademi Award' is given for excellence in which field?

Accepted Answer

C. Music and dance — The Kerala Sangeetha Nataka Akademi Award is specifically awarded for excellence in music and dance. Option A refers to a different award (Kerala Sahitya Akademi Award), while options B and D are incorrect as the Akademi focuses on performing arts rather than theatre or visual arts.

Answer

A. Literature and poetry

Answer

B. Theatre and performing arts

Answer

D. Visual arts and sculpture

Question 7

Considering the elements located in the fourth period of the modern periodic table, specifically Potassium (K), Calcium (Ca), and Scandium (Sc), which of the following statements accurately describes a periodic trend observed when moving from left to right across these elements?

Accepted Answer

D. The electronegativity generally increases, indicating a greater tendency to attract electrons in a chemical bond. — Electronegativity is the measure of an atom's ability to attract electrons in a chemical bond. As one moves from left to right across a period, the effective nuclear charge increases, and the atomic size generally decreases, leading to a stronger pull on valence electrons and thus higher electronegativity. Options A, B, and C describe inverse trends or incorrect justifications for elements within the same period.

Answer

A. The atomic radius generally increases due to the addition of a new electron shell.

Answer

B. The metallic character becomes more pronounced as the tendency to lose electrons increases.

Answer

C. The first ionization energy generally decreases due to increased shielding effect.

Question 8

Speed is defined as:‌​‍

Accepted Answer

Distance / time — Speed = distance travelled per unit time (a scalar quantity).‌​‍

Answer

Mass / volume

Answer

Force / area

Answer

Displacement / time

Question 9

Hyderabad is the capital of:‌​‍

Accepted Answer

Telangana only — Hyderabad is currently the capital of Telangana. ‌​‍AP's new capital is Amaravati (under development).

Answer

Andhra Pradesh only

Answer

Both AP and Telangana

Answer

Neither

Question 10

River of Sabarimala:‌​‍

Accepted Answer

Pamba — Pamba.‌​‍

Answer

Periyar

Answer

Chaliyar

Answer

Muvattupuzha

DCOA Mixed Practice Test #117