DCOA Mixed Practice Test #13

Question 1

Myopia (short-sightedness) is corrected using:‌​‍

Accepted Answer

Concave lens — Myopic eye over-focuses; concave lens diverges rays so image forms on retina.‌​‍

Answer

Convex lens

Answer

Cylindrical lens

Answer

Bifocal lens

Question 2

Resonance results in:‌​‍

Accepted Answer

Delocalisation of electrons; hybrid structure more stable — Benzene: resonance hybrid of two Kekulé structures. ‌​‍Carbonate ion: three equivalent resonance forms.

Answer

Only one structure

Answer

Isomers

Answer

Different compounds

Question 3

Art 19 available to:‌​‍

Accepted Answer

Citizens only — Art 19 freedoms = citizens only. Art 14, 21 = all persons.‌​‍

Answer

All persons

Answer

Foreigners only

Answer

Government

Question 4

The Travancore-Cochin state, merging the two princely states, came into being on:

Accepted Answer

1 July 1949 — Travancore and Cochin merged to form Travancore-Cochin on 1 July 1949; it became Kerala in 1956.

Answer

15 August 1947

Answer

26 January 1950

Answer

1 November 1956

Question 5

What defines a nuclear family?‌​‍

Accepted Answer

Parents + unmarried children — Trend in urban India. ‌​‍Reasons: migration, housing cost, women's work. Traditional joint family still in rural areas.

Answer

Only parents

Answer

Only children

Answer

Joint

Question 6

Ayyankali's historic journey in a 'villuvandi' (bullock cart) through public roads, traditionally forbidden to lower castes, was a powerful act of defiance. What was the primary objective Ayyankali sought to achieve through such direct actions, rather than solely through petitions or spiritual teachings?

Accepted Answer

B. To demonstrate the right to public space and challenge the physical manifestation of caste discrimination. — Ayyankali's 'villuvandi' protest was a direct action aimed at asserting the fundamental right of depressed classes to use public roads, which were symbols of upper-caste dominance. His primary objective was to challenge the physical and social barriers of caste discrimination and demonstrate their equal right to public space (B). While legislative representation (A) and land reforms (C) were important issues, they were not the immediate goal of this specific act. Mass conversions (D) were not Ayyankali's primary method, as he focused more on asserting rights within the existing social fabric.

Answer

A. To secure immediate representation for depressed classes in legislative assemblies.

Answer

C. To advocate for the abolition of the landlord system and redistribution of agricultural land.

Answer

D. To encourage mass conversions to other religions as a protest against Hindu caste hierarchy.

Question 7

The Punnapra-Vayalar uprising took place in which year?

Accepted Answer

1946 — The Punnapra-Vayalar uprising against the Travancore government took place in October 1946.

Answer

1921

Answer

1930

Answer

1957

Question 8

Amoeba is:‌​‍

Accepted Answer

Protista — Unicellular protist.‌​‍

Answer

Animalia

Answer

Fungi

Answer

Monera

Question 9

Estrogen and progesterone are produced mainly by:

Accepted Answer

Ovaries — Ovaries secrete estrogen (follicular) and progesterone (corpus luteum).

Answer

Testes

Answer

Adrenal

Answer

Pituitary

Question 10

Coefficient of x² in (1+x)⁵:

Accepted Answer

10 — Binomial theorem: 5C2 = 10. (1+x)ⁿ = ΣnCr·xr.

Answer

5

Answer

20

Answer

1

DCOA Mixed Practice Test #13