DCOA Mixed Practice Test #450

Question 1

Cataract involves:‌​‍

Accepted Answer

Clouding of the lens — Cataract is opacification of the eye lens, typically age-related; treated by surgical replacement.‌​‍

Answer

Pupil enlargement

Answer

Corneal ulcer

Answer

Detached retina

Question 2

Vigilance and Anti-Corruption Bureau Kerala:‌​‍

Accepted Answer

Statutory — State vigilance agency.‌​‍

Answer

Administrative

Answer

Political

Answer

None

Question 3

What is biomagnification?‌​‍

Accepted Answer

Toxin accumulation up food chain — DDT, mercury accumulate.‌​‍

Answer

Reduction

Answer

Nutrient flow

Answer

No effect

Question 4

A farmer family in Kerala consists of a husband, wife, and two minor children. The husband is a retired state government employee receiving a pension of ₹25,000 per month, and the wife owns 2 acres of agricultural land. They are not income tax payees. Considering the guidelines of the Pradhan Mantri Kisan Samman Nidhi (PM-KISAN) scheme, which of the following statements regarding their eligibility is correct?

Accepted Answer

C. The entire family is ineligible for the scheme because the husband is a retired government employee receiving a pension above the specified threshold. — The PM-KISAN scheme explicitly excludes farmer families where one or more members are retired government employees receiving a monthly pension of ₹10,000 or more (excluding Multi Tasking Staff / Class IV/Group D employees). Since the husband's pension exceeds this threshold, the entire family is ineligible for the scheme's benefits, irrespective of land ownership or income tax status. Other options incorrectly assume partial or full eligibility.

Answer

A. Both the husband and wife are eligible to receive separate benefits as they are a farmer family and own land.

Answer

B. Only the wife is eligible for the benefits since she owns the agricultural land and the husband is a retired government employee.

Answer

D. The family is eligible, but the benefit will be disbursed to the husband as the head of the household.

Question 5

Grignard reagent:‌​‍

Accepted Answer

CH₃MgBr (organomagnesium halide) — RMgX + carbonyl compounds → alcohols after acidic workup. ‌​‍Discovered 1900; Nobel 1912.

Answer

NaOH

Answer

Only alcohol

Answer

RCOOH

Question 6

Kerala religious demographics:‌​‍

Accepted Answer

Hindu 55%, Muslim 26%, Christian 18% approx — Approximate 2011 census.‌​‍

Answer

Unknown

Answer

50:50

Answer

Only Hindu

Question 7

Which 5E learning phase is most directly associated with the constructivist strategy of 'scaffolding' through questioning?

Accepted Answer

C. Explain — The 'Explain' phase uses scaffolding through questioning to clarify new understanding. Distractors like 'Explore' are wrong because they focus on discovery, not clarification through questioning.

Answer

A. Engage

Answer

B. Explore

Answer

D. Elaborate

Question 8

The Kerala Land Reforms (Amendment) Act gave permanent rights to tenants from:‌​‍

Accepted Answer

1 January 1970 — Kerala Land Reforms (Amendment) Act came into effect on 1 January 1970 abolishing the Janmi system.‌​‍

Answer

18 April 1991

Answer

1 November 1956

Answer

1 January 1957

Question 9

Kerala FACT (fertilizer):

Accepted Answer

Travancore headquartered — Fertilisers and Chemicals Travancore, Udyogamandal.

Answer

Bihar

Answer

UP

Answer

Gujarat

Question 10

Amoeba reproduces by:‌​‍

Accepted Answer

Binary fission — Amoeba reproduces asexually by binary fission — splitting into two daughter cells.‌​‍

Answer

Budding

Answer

Fragmentation

Answer

Spore formation

DCOA Mixed Practice Test #450