HSA Mixed Practice Test #667

Question 1

Valence shell electron pair repulsion (VSEPR) predicts shape of NH₃:‌​‍

Accepted Answer

Trigonal pyramidal (with lone pair) — 3 bond pairs + 1 lone pair on N; H-N-H angle ~107°. ‌​‍Tetrahedral electron geometry; pyramidal molecular.

Answer

Linear

Answer

Trigonal planar

Answer

Tetrahedral

Question 2

Kerala Infant Mortality Rate (lowest):

Accepted Answer

Under 7 — IMR under 7 per 1000 (SRS 2020) — lowest in India.

Answer

Under 10

Answer

15

Answer

20

Question 3

Formic acid (HCOOH) is found naturally in:

Accepted Answer

Ant bites — Formic acid (methanoic acid) is the simplest carboxylic acid; produced by ants and bee stings.

Answer

Vinegar

Answer

Lemon

Answer

Battery

Question 4

India's first Mars mission (Mangalyaan) entered Mars orbit in:‌​‍

Accepted Answer

2014 — Launched Nov 2013, entered Mars orbit 24 September 2014. ‌​‍India = first to succeed on first attempt.

Answer

2013

Answer

2015

Answer

2016

Question 5

Atomic number of Carbon:

Accepted Answer

6 — Carbon Z=6.

Answer

4

Answer

8

Answer

12

Question 6

Sabarimala review pending before:

Accepted Answer

9-judge — Referred to 9-judge bench.

Answer

5-judge

Answer

7-judge

Answer

11-judge

Question 7

Kerala's largest district by population:‌​‍

Accepted Answer

Malappuram (2011) — Malappuram.‌​‍

Answer

TVM

Answer

Ernakulam

Answer

Kozhikode

Question 8

Antonym of GOOD:‌​‍

Accepted Answer

Bad — Good ↔ bad.‌​‍

Answer

Fine

Answer

Positive

Answer

Nice

Question 9

In a remote tribal area of Idukki, Kerala, a community leader observes that the local government primary school consistently lacks a sufficient number of qualified teachers and struggles with inadequate basic sanitation facilities, despite repeated appeals. This situation directly impacts the quality of education for children in the village.

Accepted Answer

B. The State Government, in collaboration with local authorities, is primarily responsible for ensuring that all schools comply with the norms and standards for infrastructure and teacher availability as prescribed by the RTE Act, 2009. — The RTE Act, 2009, explicitly outlines norms and standards for elementary schools, including requirements for adequate infrastructure, functional sanitation facilities, and a prescribed pupil-teacher ratio with qualified teachers. Both the State Government and local authorities share the primary responsibility to ensure that all schools, irrespective of their location, adhere to these standards to provide a conducive learning environment for every child. Relying solely on the PTA or exempting schools from norms due to location are incorrect interpretations of the Act.

Answer

A. The primary responsibility for addressing these issues rests with the local Parent-Teacher Association (PTA) to raise funds and recruit teachers.

Answer

C. The RTE Act, 2009, primarily focuses on ensuring access to education, leaving specific school infrastructure and teacher qualification standards to be decided by district-level education officers.

Answer

D. While teacher availability is a concern, the RTE Act exempts schools in remote tribal areas from stringent infrastructure norms due to geographical challenges.

Question 10

Optical fibres transmit signals using the principle of:‌​‍

Accepted Answer

Total internal reflection — Optical fibres rely on repeated total internal reflection to guide light.‌​‍

Answer

Diffraction

Answer

Refraction

Answer

Polarisation

HSA Mixed Practice Test #667