KAS Prelims Mixed Practice Test #3

Question 1

Synonym of OBSTINATE:

Accepted Answer

Stubborn — Stubbornly refusing.

Answer

Flexible

Answer

Yielding

Answer

Open

Question 2

How many days in February in a leap year?‌​‍

Accepted Answer

29 — February has 29 days in a leap year, 28 in non-leap.‌​‍

Answer

28

Answer

30

Answer

31

Question 3

Kerala Forest Dept animal census:‌​‍

Accepted Answer

Every 4 years typically — Regular censuses.‌​‍

Answer

Never

Answer

Yearly

Answer

Decade

Question 4

A couple is planning to have a child. The father is a known carrier for a rare autosomal recessive genetic disorder, while the mother has no family history of the disorder and tests negative for the carrier gene. Based on this information, what is the probability that their child will be affected by this specific recessive genetic disorder?

Accepted Answer

A. 0% — For an autosomal recessive disorder, an individual must inherit two copies of the recessive allele (one from each parent) to be affected. In this scenario, the father is a carrier (heterozygous, e.g., Aa) and the mother is homozygous dominant (AA) as she tested negative and has no family history. A cross between Aa and AA individuals will produce only AA (unaffected) and Aa (carrier) offspring, meaning there is no possibility of an 'aa' (affected) genotype. Therefore, the probability of their child being affected is 0%.

Answer

B. 25%

Answer

C. 50%

Answer

D. 75%

Question 5

Mendel's experiment with:‌​‍

Accepted Answer

Pea plants — Garden pea. Father of Genetics.‌​‍

Answer

Rice

Answer

Wheat

Answer

Corn

Question 6

Sabarmati River flows through which major city?

Accepted Answer

Ahmedabad — The Sabarmati River flows through Ahmedabad, Gujarat's largest city.

Answer

Surat

Answer

Rajkot

Answer

Vadodara

Question 7

Red Fort built by:‌​‍

Accepted Answer

Shah Jahan — Shah Jahan, Delhi, 1639-1648.‌​‍

Answer

Akbar

Answer

Aurangzeb

Answer

Jahangir

Question 8

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 9

Vitamin K needed for:

Accepted Answer

Blood clotting — Blood coagulation.

Answer

Vision

Answer

Bones

Answer

Immunity

Question 10

Which of the following is NOT a mechanism of bacterial resistance to antibiotics?

Accepted Answer

D. Increased synthesis of host cell receptors — Increased synthesis of host cell receptors is not a bacterial resistance mechanism; it is a host response. Beta-lactamase production, target site alteration (e.g., penicillin-binding protein changes), and biofilm formation are well-documented resistance mechanisms.

Answer

A. Production of beta-lactamase enzymes

Answer

B. Alteration of target site to reduce drug binding

Answer

C. Formation of biofilms to protect bacterial communities

KAS Prelims Mixed Practice Test #3