LGS Mixed Practice Test #232

Question 1

Soil profile layers:

Accepted Answer

O, A, B, C, R horizons — 5 standard layers.

Answer

Only 2

Answer

Only 3

Answer

Only 1

Question 2

Ohm's law states that V =‌​‍

Accepted Answer

I × R — Voltage = Current × Resistance (at constant temperature).‌​‍

Answer

I + R

Answer

I / R

Answer

I − R

Question 3

A common symptom of iron deficiency anemia related to oxygen transport is:

Accepted Answer

C. Fatigue and weakness — Iron is a crucial component of hemoglobin, which carries oxygen in red blood cells. A deficiency in iron leads to reduced oxygen-carrying capacity, resulting in symptoms like fatigue, weakness, and shortness of breath. Hypertension is high blood pressure, jaundice is yellowing of the skin (often liver-related), and hyperglycemia is high blood sugar.

Answer

A. Hypertension

Answer

B. Jaundice

Answer

D. Hyperglycemia

Question 4

Kerala Film Development Corp:‌​‍

Accepted Answer

KSFDC — KSFDC.‌​‍

Answer

KFC

Answer

KFDC

Answer

Both

Question 5

Which unit is usually used to denote intensity of pollution?

Accepted Answer

Parts per million — Pollution concentration is measured in ppm.

Answer

Milligrams

Answer

Nanograms

Answer

Kilogram

Question 6

Who was India's Viceroy during most of WWII?‌​‍

Accepted Answer

Lord Linlithgow — Lord Linlithgow was Viceroy during 1936-1943 (most of WWII). ‌​‍He declared India at war without consulting Indian leaders.

Answer

Lord Irwin

Answer

Lord Wavell

Answer

Lord Mountbatten

Question 7

Napoleon Bonaparte became Emperor of France in:‌​‍

Accepted Answer

1804 — Napoleon crowned himself Emperor in 1804 at Notre Dame. ‌​‍Coup of 18 Brumaire (1799) earlier established him as First Consul.

Answer

1799

Answer

1812

Answer

1815

Question 8

'Nandanar' is the pen name of:‌​‍

Accepted Answer

P.C. Gopalan — Malayalam writer P.C. Gopalan wrote under the pen-name 'Nandanar'.‌​‍

Answer

C. Govinda Pisharady

Answer

P.C. Kuttikrishnan

Answer

R. Ramachandran Nair

Question 9

A hydraulic lift system uses two pistons, one with a small cross-sectional area (A1) and the other with a larger cross-sectional area (A2). If a force F1 is applied to the smaller piston, causing it to move downwards by a distance d1, how does the force exerted by the larger piston (F2) and its upward displacement (d2) relate to F1 and d1, assuming ideal conditions?

Accepted Answer

B. F2 > F1 and d2 < d1 — According to Pascal's principle, the pressure applied to the small piston (P = F1/A1) is transmitted undiminished to the larger piston. Since the larger piston has a greater area (A2 > A1), it experiences a magnified force (F2 = P * A2, hence F2 > F1). By the principle of conservation of energy, the work input must equal the work output in an ideal system (F1 * d1 = F2 * d2). Therefore, to compensate for the increased force F2, the larger piston must move a proportionally smaller distance (d2 < d1).

Answer

A. F2 = F1 and d2 = d1

Answer

C. F2 < F1 and d2 > d1

Answer

D. F2 = F1 and d2 < d1

Question 10

Graphite is used as a lubricant and in pencils because of its:‌​‍

Accepted Answer

Layered structure allowing layers to slide — Graphite's planar hexagonal layers are held by weak van der Waals forces — easy to slide.‌​‍

Answer

Conductivity alone

Answer

Low density

Answer

Hardness

LGS Mixed Practice Test #232