LGS Mixed Practice Test #222

Question 1

A worker pushes a 50 kg box across a rough horizontal floor with a constant applied force of 200 N. If the coefficient of kinetic friction between the box and the floor is 0.2, and the box moves 10 meters, what is the net work done on the box? (Take acceleration due to gravity g = 10 m/s²)

Accepted Answer

A. 1000 J — The net work done on an object is the sum of work done by all forces acting on it. The applied force does W_applied = F_applied × d = 200 N × 10 m = 2000 J. The normal force is N = mg = 50 kg × 10 m/s² = 500 N. The kinetic frictional force is F_friction = μ_k × N = 0.2 × 500 N = 100 N. The work done by friction is W_friction = -F_friction × d = -100 N × 10 m = -1000 J (negative as it opposes motion). Therefore, the net work done is W_net = W_applied + W_friction = 2000 J - 1000 J = 1000 J. This net work done also equals the change in kinetic energy of the box.

Answer

B. 2000 J

Answer

C. 500 J

Answer

D. 0 J

Question 2

Kerala Health indicators — IMR:

Accepted Answer

Among lowest in India — Lowest IMR in India.

Answer

Highest

Answer

Average

Answer

Unknown

Question 3

Warm-blooded animals:‌​‍

Accepted Answer

Birds, mammals — Endotherms.‌​‍

Answer

Reptiles

Answer

Amphibians

Answer

Fish

Question 4

Ether on cleavage with HI:

Accepted Answer

Gives alkyl iodide and alcohol/phenol — R-O-R' + HI → RI + R'OH. Which bond cleaves depends on mechanism (1°/2°/3°).

Answer

Gives two alcohols

Answer

No reaction

Answer

Only HI

Question 5

Kerala's 'Public Education Protection Mission' (പൊതു വിദ്യാഭ്യാസ സംരക്ഷണ യജ്ഞം) aims to transform government and aided schools. Which of the following initiatives is a core component of this mission?

Accepted Answer

B. Providing high-speed broadband internet connectivity and smart classrooms to all eligible schools. — The Public Education Protection Mission in Kerala primarily focuses on modernizing public education infrastructure and quality. Providing high-speed internet and smart classrooms is a key initiative under this mission, often referred to as the 'Hi-Tech School' project, transforming learning environments. Mandating a uniform curriculum for private schools or compulsory teacher transfers are not primary components of this specific mission, nor is establishing new residential schools in every panchayat.

Answer

A. Mandating a uniform curriculum across all private and public schools in the state.

Answer

C. Implementing a system of compulsory annual transfer of teachers between districts to ensure equitable resource distribution.

Answer

D. Establishing new residential schools in every panchayat for students from economically weaker sections.

Question 6

Malayalam was declared a Classical Language of India in:‌​‍

Accepted Answer

2013 — Malayalam was declared a Classical Language in 2013. ‌​‍Tamil (2004), Sanskrit (2005), Kannada (2008), and Telugu (2008) received the status earlier.

Answer

2004

Answer

2008

Answer

2015

Question 7

J. J. Thomson discovered the:‌​‍

Accepted Answer

Electron — Thomson discovered the electron in 1897 via cathode ray tube experiments.‌​‍

Answer

Neutron

Answer

Nucleus

Answer

Proton

Question 8

Which blood group is known as 'Universal Donor'?‌​‍

Accepted Answer

O — O- is the universal donor (no A, B antigens, no Rh).‌​‍

Answer

B

Answer

AB

Answer

A

Question 9

Which lineage is the Travancore Royal Family part of?‌​‍

Accepted Answer

Venad — Venad lineage.

Answer

Kolathiri

Answer

Perumpadappu

Answer

Nair

Question 10

The State Council of Educational Research and Training (SCERT) in Kerala is mandated to:

Accepted Answer

B. Develop and revise the state curriculum framework and syllabi — SCERT is primarily responsible for developing and revising the state curriculum framework and syllabi. Mid-day meal distribution (Option A) is managed by other departments like SSA or Education. Conducting examinations (Option C) is the role of examination boards, not SCERT. Fund allocation (Option D) is handled by the finance department or SSA.

Answer

A. Distribute mid-day meals to government school students

Answer

C. Conduct annual examinations for Class 10 and Class 12

Answer

D. Allocate funds for school infrastructure development

LGS Mixed Practice Test #222