Plus 2 Lecturer Mixed Practice Test #103

Question 1

Choose the correct antonym for 'magnificent' in: That is a magnificent movie.‌​‍

Accepted Answer

Small — 'Magnificent' (grand) vs 'Small' (not grand).‌​‍

Answer

Fantastic

Answer

Gigantic

Answer

Big

Question 2

Anamudi, the highest peak in South India, is located in which district of Kerala?‌​‍

Accepted Answer

Idukki — Anamudi (2,695 m) is in Idukki district, within the Eravikulam National Park. ‌​‍It is the highest peak in South India and the Western Ghats.

Answer

Thrissur

Answer

Wayanad

Answer

Palakkad

Question 3

The Inca Empire (Peru) was conquered by:‌​‍

Accepted Answer

Francisco Pizarro (1532) — Pizarro captured and executed Incan Emperor Atahualpa (1533). ‌​‍Spanish conquest of South America followed.

Answer

Cortés

Answer

Magellan

Answer

Columbus

Question 4

The bicarbonate buffer system is the most important extracellular buffer in human blood. Which chemical species primarily constitute this buffer system to maintain pH homeostasis?

Accepted Answer

C. Carbonic acid (H2CO3) and bicarbonate ions (HCO3-) — The bicarbonate buffer system consists of carbonic acid (H2CO3) as the weak acid and its conjugate base, bicarbonate ions (HCO3-). This system effectively neutralizes excess acids and bases, playing a critical role in maintaining blood pH within a narrow physiological range. While other buffer systems exist, the carbonic acid/bicarbonate system is the primary extracellular buffer.

Answer

A. Phosphate ions and proteins

Answer

B. Hemoglobin and plasma proteins

Answer

D. Ammonia and ammonium ions

Question 5

A laboratory technician is performing a preliminary screening for the presence of alkaloids in a plant extract. Which of the following reagents is commonly used as a general precipitating reagent for alkaloids, forming characteristic precipitates?

Accepted Answer

C. Mayer's reagent — Mayer's reagent (potassium mercuric iodide) is a widely used general reagent for the detection of alkaloids. It forms a creamy white precipitate with most alkaloids due to the formation of alkaloid-iodide complexes. Benedict's and Fehling's reagents are used for reducing sugars, while Biuret reagent is used for proteins.

Answer

A. Benedict's reagent

Answer

B. Fehling's solution

Answer

D. Biuret reagent

Question 6

Number of ways to arrange n distinct objects:

Accepted Answer

n! — n factorial = n × (n-1) × ... × 1. Permutations P(n,r) = n!/(n-r)!

Answer

n

Answer

n²

Answer

2^n

Question 7

Khel Ratna is for:‌​‍

Accepted Answer

Outstanding sports performance — India's highest sports honour (now Major Dhyan Chand Khel Ratna).‌​‍

Answer

Best coach

Answer

Lifetime sports contribution

Answer

Best referee

Question 8

Kudumbashree, Kerala's women empowerment programme, was launched in:‌​‍

Accepted Answer

1998 — Kudumbashree was launched in 1998 as a community-based poverty eradication programme for women.‌​‍

Answer

1991

Answer

2001

Answer

2005

Question 9

Efficiency of a real transformer is typically:‌​‍

Accepted Answer

95-99% — Modern power transformers achieve 95-99% efficiency; losses = copper + iron (core) losses.‌​‍

Answer

50%

Answer

100% always

Answer

75%

Question 10

Choose the correct form: 'If you ___ hard, you will succeed.'

Accepted Answer

work — First conditional: 'if' + present simple, 'will' + base verb.

Answer

will work

Answer

works

Answer

are working

Plus 2 Lecturer Mixed Practice Test #103