DCOA Mixed Practice Test #41

Question 1

Like poles of magnets:‌​‍

Accepted Answer

Repel — Like poles repel; unlike poles attract.‌​‍

Answer

Have no interaction

Answer

Attract

Answer

Always touch

Question 2

Pituitary gland location:‌​‍

Accepted Answer

Base of brain — Sella turcica of skull.‌​‍

Answer

Chest

Answer

Neck

Answer

Kidney

Question 3

Which Travancore ruler is credited with the development of Thiruvananthapuram as a modern city?

Accepted Answer

Swathi Thirunal — Swathi Thirunal Rama Varma (1829-1847) was a scholar-king who modernised Travancore, established English education, and was a renowned composer of Carnatic and Hindustani music.

Answer

Marthanda Varma

Answer

Uthradam Thirunal

Answer

Sri Chithira Thirunal

Question 4

First railway line in Kerala:‌​‍

Accepted Answer

Beypore-Tirur 1861 — Beypore to Tirur 1861.‌​‍

Answer

Kochi-Madras

Answer

Kollam-TVM

Answer

Palakkad-Shoranur

Question 5

Anomalous behavior of 2nd-period element (e.g., Li, Be, B) is due to:‌​‍

Accepted Answer

Small size, high charge density, absence of d-orbitals — Diagonal relationship: Li-Mg, Be-Al, B-Si. ‌​‍2nd period differs from rest of their group.

Answer

Radioactivity

Answer

Isotopes

Answer

Large size

Question 6

Restriction enzymes:‌​‍

Accepted Answer

Cut DNA at specific recognition sequences — First isolated from bacteria (defense against phages). ‌​‍E.g., EcoRI recognises GAATTC. Named molecular scissors; basis of genetic engineering.

Answer

Replicate

Answer

Join DNA

Answer

Translate

Question 7

Malala was shot by the Taliban for advocating:‌​‍

Accepted Answer

Girls' education — She was shot on 9 October 2012 on a school bus in Swat Valley for championing girls' education.‌​‍

Answer

Independence

Answer

Women's right to vote

Answer

Peace only

Question 8

The 'Dhanwantari Award' is a prestigious award presented in India to individuals for their significant contributions in which of the following fields?

Accepted Answer

C. Medical Sciences and Healthcare — The Dhanwantari Award is a prestigious recognition in India specifically dedicated to honouring individuals who have made significant and lasting contributions to the fields of medical sciences and healthcare. Named after Dhanwantari, the Hindu God of medicine, it acknowledges excellence in clinical practice, research, and public health, distinguishing it from awards in sports, literature, or environmental conservation.

Answer

A. Sports and Athletics

Answer

B. Literature and Arts

Answer

D. Environmental Conservation

Question 9

Binomial nomenclature by:

Accepted Answer

Linnaeus — Linnaeus — two-word Latin names.

Answer

Darwin

Answer

Mendel

Answer

Aristotle

Question 10

Resonance occurs when an external force's frequency matches the object's:‌​‍

Accepted Answer

Natural frequency — At resonance, energy transfer is maximum — large amplitude oscillations result.‌​‍

Answer

Speed

Answer

Wavelength

Answer

Amplitude

DCOA Mixed Practice Test #41