HSA Mixed Practice Test #516

Question 1

Mendeleev created:‌​‍

Accepted Answer

Periodic Table — Periodic Table (1869).‌​‍

Answer

Telephone

Answer

Steam engine

Answer

Penicillin

Question 2

A convex mirror always produces an image that is:‌​‍

Accepted Answer

Virtual, erect, diminished — Convex mirrors give virtual, erect, diminished images — used as rear-view mirrors.‌​‍

Answer

Real and inverted

Answer

Real and magnified

Answer

Virtual and same size

Question 3

An element 'X' is characterized by an extremely high first ionization energy and a general inertness towards chemical reactions under standard conditions. Element 'Y', located in the same period as 'X', exhibits a very low first ionization energy and is highly reactive, readily forming cations. Which of the following conclusions can be drawn about elements X and Y based on their periodic positions and properties?

Accepted Answer

C. Element X is a noble gas, and Element Y is an alkali metal. — Noble gases (Group 18) possess full valence shells, resulting in exceptionally high ionization energies and chemical inertness, fitting the description of element X. Alkali metals (Group 1) have only one valence electron, leading to very low ionization energies and high reactivity to form +1 cations, matching element Y. Other options describe elements with different ionization energy characteristics or reactivity patterns that do not align with the extreme properties given for X and Y.

Answer

A. Element X is a transition metal, and Element Y is a Group 14 element.

Answer

B. Element X is a non-metal from Group 15, and Element Y is a metal from Group 13.

Answer

D. Element X is a halogen, and Element Y is an alkaline earth metal.

Question 4

The plan-monitoring software developed by Information Kerala Mission for LSG Department is:‌​‍

Accepted Answer

Sulekha — 'Sulekha' tracks annual decentralised plan projects of local governments.‌​‍

Answer

Sugama

Answer

Sanchaya

Answer

Samvedhitha

Question 5

Emile Durkheim's key concept was:

Accepted Answer

Social facts + collective conscience — Durkheim: 'Rules of Sociological Method' (1895). Social facts have existence outside individuals; collective conscience unites society.

Answer

Class struggle

Answer

Charismatic authority

Answer

Symbolic interaction

Question 6

The Potti Sriramulu fast-unto-death in 1952 led to the creation of:‌​‍

Accepted Answer

Andhra State (1953) — Sriramulu died on the 58th day of fast demanding Telugu state. ‌​‍Andhra State formed 1 Oct 1953 — trigger for linguistic reorganisation.

Answer

Kerala

Answer

Punjab

Answer

Maharashtra

Question 7

An allergy is:‌​‍

Accepted Answer

An exaggerated immune response to a harmless substance — Allergies (hay fever, asthma, food allergy) involve hypersensitivity — typically IgE-mediated.‌​‍

Answer

A normal metabolic process

Answer

Viral infection

Answer

Cell death

Question 8

Synonym of AMICABLE:‌​‍

Accepted Answer

Friendly — Friendly.‌​‍

Answer

Cold

Answer

Strange

Answer

Hostile

Question 9

Molarity and molality differ because:‌​‍

Accepted Answer

Molality uses kg of solvent (T-independent); molarity uses L of solution (T-dependent) — For colligative properties, molality preferred because volume changes with T.‌​‍

Answer

Molality uses mass%

Answer

They are same

Answer

Molarity uses kg of solvent

Question 10

Mendel's second law:‌​‍

Accepted Answer

Independent assortment — Law of Independent Assortment.‌​‍

Answer

Segregation

Answer

Dominance

Answer

Linkage

HSA Mixed Practice Test #516