LGS Mixed Practice Test #334

Question 1

In a Laminar Airflow Workbench (LAFW), what is the primary function of the High-Efficiency Particulate Air (HEPA) filter?

Accepted Answer

C. To provide a continuous flow of air free from 0.3 micron particles, including bacteria and spores. — The HEPA filter is crucial for achieving an aseptic environment by trapping 99.97% of airborne particles 0.3 micrometers or larger, which effectively removes bacteria and fungal spores. This ensures that the air reaching the critical compounding area is essentially particulate and microbial-free. Large dust particles are typically removed by pre-filters, and negative pressure is characteristic of Biological Safety Cabinets for hazardous drugs, not the primary function of a HEPA filter in an LAFW.

Answer

A. To regulate the temperature inside the workbench.

Answer

B. To remove large dust particles from the incoming air.

Answer

D. To create a negative pressure environment for hazardous drug compounding.

Question 2

Markovnikov's rule:‌​‍

Accepted Answer

H adds to C with more H's in HX addition to asymmetric alkene — Results in more stable carbocation intermediate. ‌​‍Anti-Markovnikov (peroxide effect) in HBr + peroxide via free radicals.

Answer

Anti-Markovnikov

Answer

E1 elimination

Answer

Free radical

Question 3

Kerala's first Deputy CM:

Accepted Answer

R. Sankar — R. Sankar — first Deputy CM (1960-62).

Answer

E.M.S.

Answer

C.H. Mohammed Koya

Answer

K.R. Gowri

Question 4

A high school teacher observes that a group of 15-year-old students has formed a tight-knit clique, adopting a distinct fashion style, slang, and shared interests, often preferring to spend time with each other over family activities. This behavior is most indicative of which key aspect of adolescent social development?

Accepted Answer

C. The strong need for peer acceptance and identity formation — During adolescence, the peer group becomes increasingly central to an individual's social world and identity formation. Adolescents actively seek peer acceptance, establish their social standing, and often conform to group norms as a means of exploring and defining their own identity separate from their family.

Answer

A. Regression to earlier forms of egocentric play

Answer

B. The primary influence of parental authority diminishing

Answer

D. A developing disinterest in future career planning

Question 5

Kerala density per sq km (2011):‌​‍

Accepted Answer

860 — 860 per sq km.‌​‍

Answer

1200

Answer

1000

Answer

800

Question 6

In the context of decentralized planning and development in Kerala's three-tier Panchayati Raj system, which of the following statements accurately describes the primary role of the District Planning Committee (DPC)?

Accepted Answer

B. The DPC prepares a draft development plan for the entire district by consolidating the plans prepared by the Panchayats and Municipalities. — The District Planning Committee (DPC), constituted under Article 243ZD of the Constitution, plays a crucial role in decentralized planning. Its primary function is to consolidate the plans prepared by the Panchayats (Gram, Block, and District) and the Municipalities in the district, and then prepare a draft development plan for the entire district. This consolidated plan is then forwarded to the State Government for consideration, ensuring integrated development planning. Approving budgets or resolving disputes are not its primary functions, and election supervision is the role of the State El

Answer

A. The DPC is solely responsible for approving the annual budget of all Gram Panchayats within the district.

Answer

C. The DPC primarily acts as an appellate body for resolving disputes between different Panchayati Raj Institutions in the district.

Answer

D. The DPC's main function is to supervise the conduct of elections to the Block Panchayats and District Panchayats.

Question 7

Ozone layer is in which layer of atmosphere?‌​‍

Accepted Answer

Stratosphere — The ozone layer is in the Stratosphere (~15-35 km altitude). ‌​‍It absorbs UV radiation.

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 8

The main raw material in the Bosch process for NH₃ is:‌​‍

Accepted Answer

Air (N₂) and natural gas (for H₂) — Haber-Bosch: N₂ (air) + H₂ (from CH₄ steam reforming) → NH₃ (iron catalyst).‌​‍

Answer

Air and water

Answer

Coal only

Answer

Salt

Question 9

SA node of heart is called pacemaker because:‌​‍

Accepted Answer

Initiates heartbeat (myogenic, ~72/min at rest) — In right atrium. ‌​‍Signal to AV node → bundle of His → Purkinje fibres. Vagus nerve slows it.

Answer

Oxygenates blood

Answer

It receives all blood

Answer

Makes sound

Question 10

First Chief Justice of Kerala HC:‌​‍

Accepted Answer

K.T. Koshi — Justice K.T. Koshi.‌​‍

Answer

P.T. Raman Nair

Answer

V.R. Krishna Iyer

Answer

M.S. Menon

LGS Mixed Practice Test #334