LGS Mixed Practice Test #105

Question 1

Biopesticide Bacillus thuringiensis (Bt) produces:

Accepted Answer

Cry toxins — kills larvae of moths/butterflies — Specific to insect gut. Bt cotton, Bt brinjal use transgenic Bt gene. Safe for humans (no receptors in our gut).

Answer

Antibiotics

Answer

Virus

Answer

Enzymes

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

F5 in PowerPoint starts:‌​‍

Accepted Answer

Slideshow from beginning — F5 starts slideshow from slide 1. Shift+F5 starts from current slide.‌​‍

Answer

Spell check

Answer

Find and Replace

Answer

New slide

Question 4

KSRTC fleet strength (approx):

Accepted Answer

6,000+ buses — Around 6,000-6,500.

Answer

10,000+

Answer

2,000

Answer

1,000

Question 5

As per national guidelines, exclusive breastfeeding is recommended for infants for the first six months of life. What is the primary nutritional benefit of this practice?

Accepted Answer

A. Provides all necessary nutrients and antibodies for the infant's growth and immunity — Exclusive breastfeeding provides all the necessary nutrients, hydration, and protective antibodies for an infant's optimal growth, development, and immunity during the first six months of life. It is a complete food source for this period. Early introduction of solids is generally discouraged, and while breast milk contains iron, it doesn't guarantee sufficient stores for the entire first year without complementary feeding. Breast milk is highly nutritious, not just hydrating.

Answer

B. Helps in the early introduction of solid foods to prevent allergies

Answer

C. Ensures adequate iron stores for the first year of life

Answer

D. Primarily serves to hydrate the infant without providing significant nutrition

Question 6

The earliest extant literary work in Malayalam is:‌​‍

Accepted Answer

Ramacharitam — Ramacharitam by Cheeraman (12th century) is considered the earliest extant literary work in Malayalam.‌​‍

Answer

Krishnagatha

Answer

Adhyatma Ramayanam

Answer

Lilatilakam

Question 7

Rusting of iron is accelerated by:‌​‍

Accepted Answer

Moist air (water and oxygen) — Iron rusts when exposed to water + O₂; hydrated iron oxide (Fe₂O₃·xH₂O) = rust.‌​‍

Answer

Vacuum

Answer

Cold dry conditions

Answer

Dry air only

Question 8

Silicon Valley of India is:‌​‍

Accepted Answer

Bangalore — Bangalore (Bengaluru) is called India's Silicon Valley — hub of IT industry.‌​‍

Answer

Hyderabad

Answer

Pune

Answer

Chennai

Question 9

Who got the Jnanpith Award of 2014?‌​‍

Accepted Answer

Bhalchandra Nemade — Marathi novelist Bhalchandra Nemade won 2014 Jnanpith.‌​‍

Answer

Amrita Pritam

Answer

Tarashankar Bandopadhyay

Answer

O.N.V. Kurup

Question 10

Heisenberg uncertainty principle states:‌​‍

Accepted Answer

Δx·Δp ≥ h/(4π) — Position and momentum cannot be simultaneously known with absolute precision. ‌​‍h = Planck's constant.

Answer

ΔE·Δt = 0

Answer

v = c always

Answer

E = mc²

LGS Mixed Practice Test #105