LGS Mixed Practice Test #49

Question 1

Pampa river length:‌​‍

Accepted Answer

176 km — 176 km — third longest in Kerala.‌​‍

Answer

144 km

Answer

209 km

Answer

244 km

Question 2

In action research, which method is most appropriate for collecting qualitative data about students' attitudes toward a new teaching strategy?

Accepted Answer

C. Focus group discussions with students — Focus group discussions are ideal for gathering qualitative data about attitudes and perceptions. Option A (Standardized tests) measure quantitative outcomes, not attitudes. Option B (Observations) provide behavioral data, not direct attitudinal feedback. Option D (Pre- and post-tests) are used for quantitative performance assessment, not qualitative insights.

Answer

A. Standardized achievement tests

Answer

B. Structured classroom observations

Answer

D. Pre- and post-tests comparing scores

Question 3

The communicable disease that has been fully controlled by a national programme is:‌​‍

Accepted Answer

Smallpox — Smallpox eradicated worldwide (WHO 1980) — India free via national programme.‌​‍

Answer

Filaria

Answer

Tuberculosis

Answer

Malaria

Question 4

Kerala Mini Kits Agri Scheme:

Accepted Answer

All — Comprehensive farmer support.

Answer

Seed distribution

Answer

Tools

Answer

Fertilizer

Question 5

DNA is a:

Accepted Answer

Polymer of nucleotides (deoxyribose + phosphate + A/T/G/C) — Double helix (Watson-Crick, 1953). A=T, G≡C (base pairing). Antiparallel strands (5' to 3').

Answer

Polymer of amino acids

Answer

Polysaccharide

Answer

Lipid

Question 6

Polio vaccine by:‌​‍

Accepted Answer

Both — Jonas Salk (injectable) and Albert Sabin (oral).‌​‍

Answer

Salk

Answer

Jenner

Answer

Sabin

Question 7

CM Bihar:‌​‍

Accepted Answer

Nitish Kumar — Nitish Kumar (JD-U).‌​‍

Answer

Tejashwi

Answer

Upendra

Answer

LJP

Question 8

Rapid urbanization in developing countries often leads to significant social changes, including shifts in lifestyle and environment. From a community health perspective, which of the following health issues is most likely to show a marked increase as a direct consequence of these changes?

Accepted Answer

B. Prevalence of non-communicable diseases (NCDs) such as diabetes and hypertension. — Rapid urbanization often leads to lifestyle changes like sedentary behavior, consumption of processed foods, increased stress, and environmental pollution. These factors are major contributors to the rising prevalence of non-communicable diseases (NCDs) such as diabetes, hypertension, and cardiovascular diseases, even in developing countries. While communicable diseases can persist or emerge due to overcrowding, NCDs are a characteristic health challenge of urbanized populations resulting from lifestyle shifts.

Answer

A. Incidence of vector-borne diseases like dengue and malaria due to improved housing.

Answer

C. Rates of acute respiratory infections due to decreased air pollution from industrialization.

Answer

D. Malnutrition among children due to enhanced access to diverse and nutritious food sources.

Question 9

Nitrogen cycle step: nitrification converts:

Accepted Answer

NH₃/NH₄⁺ to NO₂⁻ to NO₃⁻ (Nitrosomonas, Nitrobacter) — Aerobic. Denitrification (Pseudomonas): NO₃⁻ → N₂, returns to atmosphere.

Answer

N₂ to NH₃

Answer

NO₃⁻ to N₂

Answer

Protein to amino acid

Question 10

Complex [Ni(CN)₄]²⁻ geometry:

Accepted Answer

Square planar (dsp² hybridisation, low-spin) — Ni²⁺ is d⁸. Strong field CN⁻ pairs up electrons → square planar. Tetrahedral in [NiCl₄]²⁻ (weak field).

Answer

Octahedral

Answer

Tetrahedral

Answer

Linear

LGS Mixed Practice Test #49