DCOA Mixed Practice Test #654

Question 1

A microbiology lab technician is preparing to culture a bacterial specimen that is suspected to be an obligate anaerobe. What specific condition is essential for the successful growth of this type of microorganism?

Accepted Answer

B. Absence of oxygen — Obligate anaerobes are microorganisms that cannot grow in the presence of oxygen and may even be harmed by it. Therefore, an essential condition for their successful culture is the complete absence of oxygen. High oxygen concentration would inhibit their growth. While carbon dioxide can be important for some bacteria, it's not the defining factor for obligate anaerobes. Room temperature incubation is a general condition and not specific to the oxygen requirement of anaerobes.

Answer

A. High oxygen concentration

Answer

C. Presence of carbon dioxide only

Answer

D. Room temperature incubation

Question 2

Who among the following served as the first Union Minister of Education in independent India, playing a crucial role in shaping the nation's educational policies and establishing key institutions like the IITs and UGC?

Accepted Answer

B. Maulana Abul Kalam Azad — Maulana Abul Kalam Azad was the first Education Minister of independent India, serving from 1947 to 1958, and was instrumental in shaping the post-independence educational landscape. Dr. S. Radhakrishnan was the first Vice President and later President, while Dr. Rajendra Prasad was the first President and C. Rajagopalachari was the last Governor-General of India.

Answer

A. Dr. Sarvepalli Radhakrishnan

Answer

C. Dr. Rajendra Prasad

Answer

D. C. Rajagopalachari

Question 3

Idamalayar Dam is built across which river?

Accepted Answer

Idamalayar River — Idamalayar Dam is built across the Idamalayar River, a tributary of the Periyar, in Ernakulam district.

Answer

Periyar

Answer

Chalakudy

Answer

Muvattupuzha

Question 4

India's first amphibious aircraft:‌​‍

Accepted Answer

ShinMaywa US-2 — Japan ShinMaywa US-2 planned.‌​‍

Answer

Cancelled

Answer

Being considered

Answer

Already

Question 5

Which social reformer started the movement called 'Sadhujana Paripalana Sangam'?‌​‍

Accepted Answer

Ayyankali — Ayyankali founded SJPS in 1907.‌​‍

Answer

Sree Narayana Guru

Answer

E.K. Janaki Amma

Answer

Sahodaran Ayyappan

Question 6

The file extension for a LibreOffice Calc spreadsheet is:

Accepted Answer

.ods — OpenDocument Spreadsheet: .ods.

Answer

.xls

Answer

.xlsx

Answer

.odt

Question 7

Highest civilian award in India:‌​‍

Accepted Answer

Bharat Ratna — Bharat Ratna is the highest civilian award.‌​‍

Answer

Padma Vibhushan

Answer

Padma Bhushan

Answer

Padma Shri

Question 8

Balban's policy:

Accepted Answer

Blood and Iron — Ruthless discipline in sultanate.

Answer

Market control

Answer

Din-i-Ilahi

Answer

Diarchy

Question 9

Which is the largest freshwater lake in Kerala?

Accepted Answer

Sasthamkotta — Sasthamkotta Lake in Kollam is the largest freshwater lake in Kerala. It is also a Ramsar site (designated 2002).

Answer

Vembanad

Answer

Ashtamudi

Answer

Manasarovar

Question 10

The longest cell in the human body is:‌​‍

Accepted Answer

Nerve cell (Neuron) — Neurons can be over 1 metre long (e.g., from spine to toe).‌​‍

Answer

RBC

Answer

WBC

Answer

Muscle cell

DCOA Mixed Practice Test #654