LGS Mixed Practice Test #348

Question 1

Biogeochemical cycles include:‌​‍

Accepted Answer

Water, Carbon, Nitrogen, Phosphorus — Gaseous cycles: C, N (atmosphere). ‌​‍Sedimentary: P, S (crust). Human activity disrupts cycles (fertilizer N, burning C).

Answer

Random

Answer

Only water

Answer

Only carbon

Question 2

National Calendar started:‌​‍

Accepted Answer

1957 — Saka Calendar adopted 22 March 1957.‌​‍

Answer

1960

Answer

1950

Answer

1947

Question 3

A Gram stain is performed on a bacterial sample from a patient's wound. The results show purple-colored cocci arranged in clusters. This finding most likely indicates the presence of a:

Accepted Answer

B. Gram-positive coccus. — Gram-positive bacteria retain the crystal violet stain and appear purple under the microscope, whereas Gram-negative bacteria appear red/pink. Cocci refer to spherical bacteria, and their arrangement in clusters is characteristic of Staphylococcus species. Therefore, purple-colored cocci in clusters indicate a Gram-positive coccus.

Answer

A. Gram-negative bacillus.

Answer

C. Gram-negative coccus.

Answer

D. Gram-positive bacillus.

Question 4

The Old Man and the Sea was written by:

Accepted Answer

Ernest Hemingway — Hemingway won the Pulitzer (1953) and Nobel (1954) after this 1952 novella.

Answer

F. Scott Fitzgerald

Answer

John Steinbeck

Answer

William Faulkner

Question 5

Centre of mass of a uniform triangular lamina lies at:

Accepted Answer

Centroid (intersection of medians) — Centroid divides each median in 2:1. For uniform mass distribution, centroid = CoM.

Answer

Orthocentre

Answer

Circumcentre

Answer

Incentre

Question 6

A constructivist teacher wants to assess students' understanding of the water cycle after a 5E lesson. Which assessment method would best evaluate their ability to apply knowledge in a new context?

Accepted Answer

C. A group project designing a model or poster to explain the water cycle to younger students. — Option C aligns with the 'Elaborate' phase, where students apply knowledge in new contexts, making it the best fit for assessing application. Option A tests recall, B tests metacognition, and D tests passive summarization—none reflect authentic application under constructivism.

Answer

A. A multiple-choice quiz testing factual recall of the water cycle steps.

Answer

B. A written reflection where students describe their learning process and challenges.

Answer

D. An oral presentation summarizing the water cycle as taught by the teacher.

Question 7

Longest part of alimentary canal:‌​‍

Accepted Answer

Small intestine — Small intestine (~6.5 m).‌​‍

Answer

Oesophagus

Answer

Large intestine

Answer

Stomach

Question 8

CV Raman Pillai's trilogy:

Accepted Answer

Marthanda Varma, Dharmaraja, Rama Raja Bahadur — Historical trilogy.

Answer

Only MV

Answer

Two

Answer

None

Question 9

Sucrose (table sugar) is:‌​‍

Accepted Answer

Disaccharide of glucose + fructose (α-1,β-2 glycosidic) — Non-reducing sugar (both anomeric C involved in bond). ‌​‍Hydrolysis (invertase) gives invert sugar.

Answer

Amino acid

Answer

Polysaccharide

Answer

Monosaccharide

Question 10

Kerala coastline length:

Accepted Answer

590 km — About 590 km (some sources 580).

Answer

400 km

Answer

500 km

Answer

700 km

LGS Mixed Practice Test #348