Plus 2 Lecturer Mixed Practice Test #1001

Question 1

Which of the following strategies is most effective in promoting healthy emotional development in adolescents?

Accepted Answer

B. Encouraging open communication and empathy — The correct answer is B because encouraging open communication and empathy helps adolescents feel understood and supported, which is crucial for healthy emotional development. This approach allows them to express their feelings and learn how to manage emotions in a positive way. Options A, C, and D are less effective and can even be harmful, as they either suppress emotional expression or neglect the emotional needs of the adolescent.

Answer

A. Providing strict rules without explanation

Answer

C. Ignoring emotional outbursts

Answer

D. Focusing solely on academic achievement

Question 2

The ratio 2:3 expressed as a percentage of the total is:‌​‍

Accepted Answer

40%, 60% — 2/5 = 40%; 3/5 = 60%.‌​‍

Answer

20%, 30%

Answer

30%, 50%

Answer

25%, 75%

Question 3

Sound travels fastest in:‌​‍

Accepted Answer

Steel — Sound travels fastest in solids (steel ~5,960 m/s) > liquids > gases. ‌​‍Cannot travel through vacuum.

Answer

Vacuum

Answer

Air

Answer

Water

Question 4

One word: Life story by self:

Accepted Answer

Autobiography — Autobiography.

Answer

Biography

Answer

Memoir

Answer

Journal

Question 5

Aspirin (acetylsalicylic acid) is known to undergo hydrolysis, especially in the presence of moisture or heat, leading to the formation of salicylic acid and acetic acid. Which functional group in aspirin is primarily responsible for this degradation pathway?

Accepted Answer

C. Ester group — Aspirin is an ester formed from salicylic acid and acetic anhydride. The ester functional group (-COO-) is highly susceptible to hydrolysis, which breaks the molecule into its constituent salicylic acid and acetic acid. The carboxyl group, phenolic hydroxyl, and benzene ring are stable under these specific degradation conditions.

Answer

A. Carboxyl group

Answer

B. Phenolic hydroxyl group

Answer

D. Benzene ring

Question 6

Kerala's tropical monsoon climate, characterized by high temperatures and heavy rainfall, significantly contributes to the widespread formation of laterite soils, especially in the midlands and highlands. Considering the typical characteristics of laterite soils, which agricultural approach is most appropriate for sustainable cultivation in these regions?

Accepted Answer

B. Plantation agriculture involving crops like rubber, cashew, and various spices, often coupled with contour farming and organic matter enrichment. — Laterite soils, common in Kerala's midlands and highlands, are typically acidic, porous, and nutrient-poor due to heavy leaching. However, they are well-suited for plantation crops like rubber, cashew, and spices which can tolerate these conditions. Sustainable practices like contour farming prevent soil erosion, and enriching with organic matter improves fertility, making option B the most appropriate.

Answer

A. Intensive paddy cultivation requiring constant waterlogging and high nutrient input in large, flat fields.

Answer

C. Large-scale cultivation of annual food grains such as wheat and maize using conventional deep plowing methods.

Answer

D. Extensive horticulture of temperate fruits like apples and pears, which thrive in deep, fertile loamy soils.

Question 7

A sub-centre is responsible for providing healthcare services to a population of up to how many individuals?

Accepted Answer

B. 5,000 — The correct answer is B. 5,000. A sub-centre is the most peripheral and first contact point between the primary healthcare system and the community, serving a population of up to 5,000. Options A, C, and D are incorrect as they do not align with the standard population coverage of a sub-centre.

Answer

A. 3,000

Answer

C. 10,000

Answer

D. 15,000

Question 8

Choose correct form: 'The car is different ___ the one I saw yesterday.'

Accepted Answer

from — 'Different from' (UK/US); 'different to' (UK); 'different than' informal US.

Answer

with

Answer

to

Answer

than

Question 9

Atoms having the same mass number but different atomic numbers are called:‌​‍

Accepted Answer

Isobars — Isobars: same A, different Z (e.g., ⁴⁰Ar, ⁴⁰K, ⁴⁰Ca).‌​‍

Answer

Isotopes

Answer

Allotropes

Answer

Isotones

Question 10

Tissue culture technique:‌​‍

Accepted Answer

Growing plant cells/tissues on nutrient medium under sterile conditions — clones — Totipotency. ‌​‍Micropropagation. Somaclones. ‌​‍Somatic hybridization via protoplast fusion.

Answer

Growing animal cells

Answer

Only algae

Answer

Only fungi

Plus 2 Lecturer Mixed Practice Test #1001