Plus 2 Lecturer Mixed Practice Test #158

Question 1

Glucose absorbed in:‌​‍

Accepted Answer

Small intestine — Small intestine villi.‌​‍

Answer

Stomach

Answer

Mouth

Answer

Large intestine

Question 2

The audible frequency range for humans is approximately:

Accepted Answer

20 Hz – 20,000 Hz — Below 20 Hz is infrasound; above 20 kHz is ultrasound.

Answer

1–100 Hz

Answer

100 kHz – 1 MHz

Answer

Above 20,000 Hz

Question 3

Choose the correct form: 'The number of students ___ increasing.'‌​‍

Accepted Answer

is — 'The number of' is singular → 'is'. 'A number of' is plural.‌​‍

Answer

have

Answer

were

Answer

are

Question 4

A new teacher wants to establish effective classroom management from day one. Which of the following strategies is most crucial for preventing disruptive behavior proactively?

Accepted Answer

B. Clearly communicating classroom rules and routines and practicing them with students. — Proactive classroom management involves setting clear expectations and teaching students how to meet them. Communicating and practicing rules and routines from the beginning helps establish a predictable environment, significantly reducing future disruptions. Implementing immediate punishments (A) is reactive, while allowing students to decide rules (C) without guidance can lead to chaos. Focusing only on academics (D) ignores the need for structural management.

Answer

A. Immediately implementing a strict punishment system for rule breakers.

Answer

C. Allowing students to decide their own rules to foster autonomy.

Answer

D. Primarily focusing on academic content and assuming students will behave.

Question 5

Kerala's first woman DGP:‌​‍

Accepted Answer

B. Sandhya — B. Sandhya.‌​‍

Answer

Lakshmi

Answer

Sheela Bose

Answer

R. Sreelekha

Question 6

Antonym of SMART:‌​‍

Accepted Answer

Stupid — Smart ↔ stupid.‌​‍

Answer

Clever

Answer

Bright

Answer

Intelligent

Question 7

Which of the following statements best describes the role of creatinine in clinical biochemistry?

Accepted Answer

A. It is a byproduct of muscle metabolism and is excreted by the kidneys — Creatinine is a waste product generated from muscle metabolism (creatine phosphate breakdown) and is excreted by the kidneys. It is used clinically to estimate glomerular filtration rate (GFR) and assess renal function. It is not synthesized in the liver, a hormone, or a neurotransmitter.

Answer

B. It is synthesized in the liver and used for energy production in muscles

Answer

C. It is a hormone released by the thyroid gland to regulate metabolism

Answer

D. It is a neurotransmitter involved in synaptic transmission

Question 8

Kerala's agricultural sector, known for its diverse cropping patterns, faces significant vulnerabilities. Considering the broader agricultural economy, which of the following represents the most pressing long-term challenge exacerbated by climate change for the state's food security?

Accepted Answer

C. Increased frequency and intensity of extreme weather events such as droughts, floods, and unseasonal rains, severely impacting crop yields and agricultural land. — Climate change primarily manifests in Kerala through erratic rainfall patterns, more frequent and intense floods, prolonged droughts, and unseasonal rains. These extreme weather events directly harm crop production, damage agricultural infrastructure, and reduce arable land, thereby posing a severe long-term threat to food security. Options A and B present incorrect or overly optimistic scenarios, while D is a potential economic consequence but not the direct and primary climate change impact on food security.

Answer

A. A consistent and predictable increase in the average annual rainfall, leading to enhanced irrigation facilities throughout the year.

Answer

B. A guaranteed shift in traditional cultivation practices towards high-value, export-oriented cash crops due to changing weather patterns.

Answer

D. A significant reduction in the cost of agricultural labor due to reduced demand for manual work in farming.

Question 9

Kerala's characteristic laterite soils are extensively used for specific agricultural practices. Which climatic condition is most crucial for the formation of these soils, and what is its primary effect on the soil's nutrient content?

Accepted Answer

C. High temperature and heavy rainfall, causing intense leaching of soluble bases and silica. — Laterite soils form under hot and humid tropical conditions characterized by high temperatures and heavy rainfall. This climate leads to intense leaching, where soluble bases (like calcium, magnesium, potassium) and silica are washed away from the soil profile. This process leaves behind a high concentration of relatively insoluble iron and aluminum oxides, making laterite soils typically less fertile due to nutrient depletion.

Answer

A. High temperature and moderate rainfall, leading to accumulation of organic matter.

Answer

B. Low temperature and high humidity, promoting retention of soluble minerals.

Answer

D. Arid conditions with sparse rainfall, concentrating iron and aluminum oxides.

Question 10

The process by which beneficial soil bacteria convert nitrogen gas to usable nitrates is:‌​‍

Accepted Answer

Nitrogen fixation — Rhizobium (in root nodules of legumes) and Azotobacter fix atmospheric N₂ into NH₃/NO₃⁻.‌​‍

Answer

Denitrification

Answer

Ammonification

Answer

Nitrification

Plus 2 Lecturer Mixed Practice Test #158