DCOA Mixed Practice Test #294

Question 1

A young child is diagnosed with Kwashiorkor, a form of severe protein malnutrition. This condition primarily arises due to a deficiency of which type of amino acids in the diet?

Accepted Answer

B. Essential amino acids — Essential amino acids cannot be synthesized by the human body and must be obtained from the diet. Kwashiorkor is characterized by a severe protein deficiency, often due to a lack of dietary intake of these crucial essential amino acids, leading to symptoms like edema and muscle wasting. Non-essential amino acids can be synthesized, and conditionally essential ones are only essential under specific conditions.

Answer

A. Non-essential amino acids

Answer

C. Conditionally essential amino acids

Answer

D. Branched-chain amino acids

Question 2

Compton effect demonstrates:‌​‍

Accepted Answer

Photon's particle nature (elastic scattering) — X-ray scattering from electrons; wavelength increases (energy drops). ‌​‍Nobel 1927.

Answer

Polarization

Answer

Diffraction

Answer

Wave nature

Question 3

Saheed Diwas (Martyrs Day):‌​‍

Accepted Answer

23 March (Bhagat Singh, Rajguru, Sukhdev) — 23 March — Bhagat Singh hanging.‌​‍

Answer

26 Jan

Answer

30 Jan

Answer

15 Aug

Question 4

An unknown element 'Z' is found to have its last electron entering a p-orbital, and it readily forms an anion with a -1 charge. Based on this information, which of the following statements is most likely true about element 'Z'?

Accepted Answer

C. It is a halogen, typically found in Group 17 of the periodic table. — An element with its last electron entering a p-orbital belongs to the p-block. Forming an anion with a -1 charge signifies that the element needs one electron to achieve a stable octet configuration. This characteristic property belongs to Group 17 elements, also known as halogens. Noble gases are chemically inert and do not readily form ions, s-block elements typically form cations, and d-block elements (transition metals) usually form cations with variable valencies.

Answer

A. It belongs to the s-block and is a highly reactive metal.

Answer

B. It is a noble gas, characterized by its chemical inertness.

Answer

D. It belongs to the d-block and exhibits variable valency.

Question 5

The 'Samagra Shiksha, Kerala' (SSK) initiative integrates the erstwhile Sarva Shiksha Abhiyan (SSA), Rashtriya Madhyamik Shiksha Abhiyan (RMSA), and Teacher Education (TE). A key focus of SSK in Kerala, particularly in alignment with RTE principles, is:

Accepted Answer

C. Ensuring equitable and inclusive quality education from pre-school to senior secondary levels for all children. — Samagra Shiksha is an overarching program designed to ensure inclusive and equitable quality education at all levels, from pre-primary to senior secondary. This comprehensive approach aligns perfectly with the RTE Act's goal of providing free and compulsory quality education to all children, focusing on bridging equity gaps and improving learning outcomes. It is a centrally sponsored scheme with state implementation, not about centralizing decisions, privatizing, or shifting the entire financial burden.

Answer

A. Centralizing all educational decision-making processes at the state secretariat level for uniformity.

Answer

B. Promoting private sector participation as the sole driver for infrastructure development in schools.

Answer

D. Shifting the financial burden of school maintenance and operational costs entirely to local self-government institutions.

Question 6

Who is the author of 'Jnanappana'?

Accepted Answer

Poonthanam Namboothiri — Poonthanam Namboothiri's 17th-century Malayalam devotional classic.

Answer

Melpathur Narayana Bhattathiri

Answer

Vallathol Narayana Menon

Answer

Cherusseri Namboothiri

Question 7

The Ezhuthachan Puraskaram, Kerala's highest literary honour, was first awarded to:‌​‍

Accepted Answer

S.K. Pottekkatt — S.K. Pottekkatt received the first Ezhuthachan Puraskaram in 1993.‌​‍

Answer

G. Sankara Kurup

Answer

Thakazhi

Answer

M.T. Vasudevan Nair

Question 8

Haemoglobin has:‌​‍

Accepted Answer

Iron — Iron (gives blood red colour).‌​‍

Answer

Copper

Answer

Zinc

Answer

Calcium

Question 9

Normal number of chromosomes in a human somatic cell is:‌​‍

Accepted Answer

46 — Humans have 46 chromosomes (23 pairs); gametes have 23.‌​‍

Answer

44

Answer

23

Answer

48

Question 10

A patient is dehydrated, and their body is attempting to conserve water. Which part of the nephron is most significantly influenced by Antidiuretic Hormone (ADH) to increase water reabsorption and produce concentrated urine?

Accepted Answer

D. Collecting duct — The collecting duct is the primary site where ADH acts, increasing the permeability of its walls to water, thereby promoting water reabsorption back into the bloodstream and leading to the production of concentrated urine. Bowman's capsule is for filtration. The proximal convoluted tubule reabsorbs most filtered substances but is not regulated by ADH. The Loop of Henle establishes the medullary osmotic gradient, but ADH primarily acts on the collecting duct.

Answer

A. Bowman's capsule

Answer

B. Proximal convoluted tubule

Answer

C. Loop of Henle

DCOA Mixed Practice Test #294