DCOA Mixed Practice Test #52

Question 1

Rickets in children is caused by deficiency of:‌​‍

Accepted Answer

Vitamin D — Vitamin D deficiency → poor Ca absorption → weak, bent bones (rickets).‌​‍

Answer

Vitamin C

Answer

Vitamin A

Answer

Vitamin E

Question 2

If 1 January 2023 is Sunday, what day is 1 January 2024?‌​‍

Accepted Answer

Monday — 2023 is not a leap year → 365 days → 52 weeks + 1 odd day. Sunday + 1 = Monday.‌​‍

Answer

Sunday

Answer

Tuesday

Answer

Wednesday

Question 3

Which of the following is a defining characteristic of a primary social group?

Accepted Answer

C. Close, intimate, and face-to-face interaction with strong emotional ties. — Primary groups are fundamental in shaping an individual's social self and are characterized by close, intimate, face-to-face interactions, strong emotional bonds, and enduring relationships. Examples include family and close friends. Options A and B describe secondary groups, which are typically larger, more impersonal, and formed to achieve specific goals. Option D describes characteristics of formal organizations or professional groups, not primary groups.

Answer

A. Large membership with impersonal and formal relationships.

Answer

B. Relationships are goal-oriented and temporary.

Answer

D. Members are selected based on specific skills or qualifications.

Question 4

Poverty is a significant social problem with profound implications for community health. How does poverty primarily contribute to poor health outcomes in a community?

Accepted Answer

B. By limiting access to quality healthcare, nutritious food, and safe living conditions. — Poverty directly contributes to poor health outcomes by severely limiting individuals' and families' access to essential resources such as quality healthcare services, nutritious food, safe housing, and clean water and sanitation facilities. This often leads to higher rates of infectious diseases, malnutrition, and chronic conditions. Options A, C, and D describe scenarios that are generally antithetical to the realities of poverty or incorrect assumptions about its impact.

Answer

A. By increasing access to diverse nutritional food sources and clean water.

Answer

C. By fostering strong community bonds that negate the need for formal healthcare.

Answer

D. By promoting higher educational attainment, leading to better health literacy.

Question 5

Beriberi from:

Accepted Answer

Vit B1 deficiency — Thiamine deficiency — polished rice diets.

Answer

B12

Answer

B6

Answer

C

Question 6

State tree:‌​‍

Accepted Answer

Coconut — Coconut tree.‌​‍

Answer

Teak

Answer

Rubber

Answer

Jackfruit

Question 7

Dolly the sheep (1997) was produced by:‌​‍

Accepted Answer

Somatic cell nuclear transfer (cloning) by Ian Wilmut — First mammal cloned from adult somatic cell. ‌​‍Roslin Institute, Scotland. Premature aging (shorter telomeres).

Answer

Selective breeding

Answer

IVF

Answer

Parthenogenesis

Question 8

Which of the following body defenses is considered a NON-SPECIFIC immune response?

Accepted Answer

B. Phagocytosis by neutrophils and macrophages — Phagocytosis by neutrophils and macrophages is a non-specific immune response as it targets a wide range of pathogens without prior sensitization. Antibody production (Option A) and T-helper cell activation (Option C) are specific immune responses; memory cell formation (Option D) is a feature of adaptive immunity.

Answer

A. Production of antibodies by B lymphocytes

Answer

C. Activation of T-helper cells

Answer

D. Memory cell formation after vaccination

Question 9

The agricultural sector in Kerala is characterized by a predominance of small landholdings and dependence on traditional farming methods, leading to challenges in productivity and market competitiveness. Which strategy would be most effective in modernizing the sector and improving farmers' income sustainably?

Accepted Answer

C. Investing in agricultural research and extension services, promoting mechanization, and facilitating access to modern farming techniques and inputs. — Investing in agricultural research and extension services, promoting mechanization, and facilitating access to modern farming techniques and inputs directly addresses productivity and competitiveness challenges in a sustainable manner. While organic farming is beneficial, it alone may not achieve the required productivity, and direct income support doesn't modernize the sector. Land pooling, though potentially beneficial, faces significant practical implementation hurdles and is not solely about modernization.

Answer

A. Focusing exclusively on promoting organic farming methods without technological upgrades.

Answer

B. Providing large-scale direct income support to all farmers, irrespective of their productivity.

Answer

D. Encouraging farmers to form large cooperative farms by pooling their land.

Question 10

One significant benefit of implementing Continuous and Comprehensive Evaluation (CCE) for students is its potential to:

Accepted Answer

B. Reduce the emphasis on rote learning and encourage holistic development. — CCE aims to reduce examination stress and the reliance on rote learning by incorporating diverse assessment methods and evaluating a broader range of skills and attributes. It encourages holistic development rather than just academic memorization. Options A and C describe outcomes CCE tries to mitigate or move away from, while D is more aligned with external standardized testing.

Answer

A. Increase the pressure on students by making every activity graded.

Answer

C. Streamline the evaluation process by focusing only on written examinations.

Answer

D. Provide a standardized comparison of student performance across different schools.

DCOA Mixed Practice Test #52