LGS Mixed Practice Test #750

Question 1

A high school science teacher wants to improve student participation in classroom discussions. She decides to conduct action research. After identifying the problem and reviewing relevant literature, what is the crucial next step in the action research cycle?

Accepted Answer

C. Collecting baseline data on current student participation levels and identifying contributing factors. — In the action research cycle (Plan-Act-Observe-Reflect), after identifying the problem, the 'Plan' stage involves understanding the current situation. Collecting baseline data is essential to accurately define the problem, measure its extent, and later evaluate the impact of any intervention. Implementing a strategy without baseline data (A) or just formulating a hypothesis (B) skips this crucial observational step. Presenting to administration (D) is an administrative step, not a core research cycle step.

Answer

A. Immediately implementing a new discussion strategy to see if it works.

Answer

B. Formulating a hypothesis about the causes of low participation and designing an intervention.

Answer

D. Presenting the problem to the school administration for their approval and support.

Question 2

A patient is diagnosed with severe metabolic acidosis. Which of the following physiological compensatory mechanisms would be the MOST immediate and significant in attempting to restore the blood pH towards its normal range?

Accepted Answer

B. Hyperventilation to reduce arterial PCO2. — Hyperventilation is the most immediate and significant compensatory mechanism for metabolic acidosis. By increasing the rate and depth of breathing, the body rapidly expels more carbon dioxide, thereby reducing arterial PCO2 and shifting the bicarbonate buffer system equilibrium to decrease hydrogen ion concentration and raise pH. Increased renal reabsorption of bicarbonate ions and enhanced secretion of aldosterone are renal compensatory mechanisms, which are slower to act compared to respiratory compensation. Activation of the thirst mechanism is related to fluid balance and osmoregulation,

Answer

A. Increased renal reabsorption of bicarbonate ions.

Answer

C. Enhanced secretion of aldosterone to increase H+ excretion.

Answer

D. Activation of the thirst mechanism to increase fluid intake.

Question 3

Ratio in national flag:‌​‍

Accepted Answer

2:3 — Width:length = 2:3.‌​‍

Answer

1:2

Answer

3:2

Answer

3:5

Question 4

Kerala Lok Sabha seats (18th LS):‌​‍

Accepted Answer

20 — 20 seats.‌​‍

Answer

15

Answer

30

Answer

25

Question 5

Mendeleev's periodic table arranged elements by:‌​‍

Accepted Answer

Atomic mass — Mendeleev (1869) used atomic mass; Moseley later switched to atomic number.‌​‍

Answer

Atomic number

Answer

Electronegativity

Answer

Atomic radius

Question 6

Big Five personality traits (OCEAN):‌​‍

Accepted Answer

Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism — Also called Five-Factor Model. ‌​‍Most accepted trait theory. Stable across cultures.

Answer

Only introvert

Answer

Only IQ

Answer

4 humors

Question 7

Cannabinoids are from:

Accepted Answer

Cannabis sativa (ganja, charas, marijuana) — THC is active compound. Chronic use → amotivation, memory issues. Not physiologically addictive but psychologically.

Answer

Poppy

Answer

Coca

Answer

Ephedra

Question 8

Who was the third signatory to the Malayali Memorial?

Accepted Answer

K.P. Sankara Menon — K.P. Sankara Menon — third signatory to Malayali Memorial (1891).

Answer

Dr. Palpu

Answer

G.P. Pillai

Answer

N. Raman Pillai

Question 9

Hypothalamus:‌​‍

Accepted Answer

Homeostasis, hormones — Links nervous + endocrine systems.‌​‍

Answer

Respiration

Answer

Vision

Answer

Digestion

Question 10

Study of stamps:‌​‍

Accepted Answer

Philately — Philately.‌​‍

Answer

Calligraphy

Answer

Numismatics

Answer

Epigraphy

LGS Mixed Practice Test #750