DCOA Mixed Practice Test #640

Question 1

Atmospheric pressure at sea level is approximately:‌​‍

Accepted Answer

760 mm of Hg — 1 atm = 760 mm Hg = 101.3 kPa.‌​‍

Answer

7600 mm of Hg

Answer

76 mm of Hg

Answer

10 mm of Hg

Question 2

INS Vikrant, India's first indigenous aircraft carrier, was built at:‌​‍

Accepted Answer

Cochin Shipyard — INS Vikrant (IAC-1) was built at Cochin Shipyard Limited and commissioned in September 2022.‌​‍

Answer

Mazagon Dock Mumbai

Answer

Goa Shipyard

Answer

Garden Reach Kolkata

Question 3

Kerala Calendar year starts (Chingam):

Accepted Answer

August-September — Chingam 1 = around mid-August.

Answer

January

Answer

April

Answer

October

Question 4

Resistance increases with:‌​‍

Accepted Answer

Higher temperature (for most metals) — In metals, resistance rises with temperature due to increased lattice vibrations.‌​‍

Answer

Shorter length

Answer

Larger cross-section

Answer

Decreased temperature

Question 5

In the 5E learning model, which phase directly involves students in applying prior knowledge to construct new understanding?

Accepted Answer

A. Engage — The 'Engage' phase uses activities like brainstorming to connect existing knowledge to the new topic. Distractors like 'Explore' (hands-on) are wrong because they focus on discovery, not prior knowledge application.

Answer

B. Explore

Answer

C. Explain

Answer

D. Elaborate

Question 6

Erikson's theory of psychosocial development has:‌​‍

Accepted Answer

8 stages across lifespan — Trust vs mistrust, autonomy vs shame, initiative vs guilt, industry vs inferiority, identity vs confusion (famous 5th), intimacy vs isolation, generativity vs stagnation, integrity vs despair.‌​‍

Answer

3

Answer

Only childhood

Answer

5 stages

Question 7

Keralavarma Valiyakoyi Thampuran translated which major work into Malayalam?‌​‍

Accepted Answer

Shakuntalam — Keralavarma Valiyakoyi Thampuran translated Kalidasa's Shakuntalam (Abhijnanashakuntalam) into Malayalam, making this Sanskrit classic accessible to Malayalam readers.‌​‍

Answer

Ramayana

Answer

Mahabharata

Answer

Bhagavatam

Question 8

Pinaka range upgrade:‌​‍

Accepted Answer

90 km version — Enhanced Pinaka range up to 90 km.‌​‍

Answer

Cancelled

Answer

45 km

Answer

Only 40

Question 9

Salt bridge in a galvanic cell is used to:

Accepted Answer

Maintain electrical neutrality and complete the circuit — Salt bridge (KCl/KNO₃ in gel) allows ion flow between half-cells, maintaining charge balance.

Answer

Generate electricity

Answer

Provide heat

Answer

Dissolve electrodes

Question 10

First communist CM in India:‌​‍

Accepted Answer

EMS in Kerala — EMS Namboodiripad — Kerala 1957, first elected communist CM in world.‌​‍

Answer

V.S. Achuthanandan

Answer

Jyoti Basu in WB

Answer

Namboodiripad

DCOA Mixed Practice Test #640