LGS Mixed Practice Test #847

Question 1

Hydrogen bonding occurs when H is bonded to which highly electronegative atoms?

Accepted Answer

F, O, N — H bonded to F/O/N shows strong H-bonding (explains water's high b.p.).

Answer

C, Si, P

Answer

Cl, Br, I

Answer

Na, K, Mg

Question 2

Resistance unit:‌​‍

Accepted Answer

Ohm — Named after Georg Ohm.‌​‍

Answer

Volt

Answer

Ampere

Answer

Watt

Question 3

Which endocrine gland is responsible for regulating metabolism, energy levels, and body temperature?

Accepted Answer

C. Thyroid gland — The thyroid gland produces hormones (T3 and T4) that are crucial for regulating the body's metabolic rate, influencing energy levels, body temperature, and growth. The adrenal glands produce stress hormones, the pancreas regulates blood sugar, and the pituitary gland is the 'master gland' controlling many other endocrine glands but not directly metabolism as its primary role.

Answer

A. Adrenal gland

Answer

B. Pancreas

Answer

D. Pituitary gland

Question 4

India's population (2024 estimate):‌​‍

Accepted Answer

143+ crore — Around 143-144 crore.‌​‍

Answer

130 crore

Answer

150 crore

Answer

140 crore

Question 5

Which Kerala government scheme, launched in 2019, aims to provide free textbooks, uniforms, and bicycles to students from economically weaker sections to reduce dropout rates in government schools?

Accepted Answer

C. Pothichoru — The K-SMART (Kerala State Model of Reforming Textbooks) scheme includes provisions for free textbooks, uniforms, and bicycles for students in government schools from low-income families. KITE Victers is a digital education initiative, Pothichoru is a literacy programme, and Snehasparsham focuses on school infrastructure improvements. Thus, K-SMART is the correct answer.

Answer

A. KITE Victers

Answer

B. K-SMART

Answer

D. Snehasparsham

Question 6

The first Arab writer to call Kerala as 'Malabar' was:‌​‍

Accepted Answer

Sulaiman — Sulaiman the Merchant (9th century Arab traveller) referred to Kerala as Malabar.‌​‍

Answer

Niccolo Conti

Answer

Al-Biruni

Answer

Ibn Battuta

Question 7

The rate of a chemical reaction generally increases with:‌​‍

Accepted Answer

Increase in temperature — Higher temperature → more molecules have activation energy → faster reaction.‌​‍

Answer

Decrease in temperature

Answer

Decrease in surface area

Answer

Decrease in concentration

Question 8

Speed of light:‌​‍

Accepted Answer

3×10⁸ — 3×10⁸ m/s in vacuum.‌​‍

Answer

3×10⁶

Answer

3×10¹⁰

Answer

3×10¹²

Question 9

Two trains 100m and 150m long, same direction at 60 km/h and 40 km/h. Time to cross:

Accepted Answer

45 sec — Relative speed = 20 km/h = 50/9 m/s. Total length = 250m. Time = 250/(50/9) = 45 sec.

Answer

40 sec

Answer

50 sec

Answer

30 sec

Question 10

A student is exceptional at navigating complex maps, visualizing three-dimensional objects, and designing intricate architectural models. According to Howard Gardner's theory of Multiple Intelligences, this student likely possesses a high degree of which intelligence?

Accepted Answer

D. Spatial intelligence — Spatial intelligence, as defined by Gardner, is the capacity to think in three dimensions, visualize accurately, and manipulate mental images. The student's proficiency in navigating maps, visualizing 3D objects, and designing models are all strong indicators of this specific intelligence. Musical, bodily-kinesthetic, and logical-mathematical intelligences are distinct domains that do not directly relate to these skills.

Answer

A. Musical intelligence

Answer

B. Bodily-kinesthetic intelligence

Answer

C. Logical-mathematical intelligence

LGS Mixed Practice Test #847