LGS Mixed Practice Test #602

Question 1

In Python, the len() function returns:

Accepted Answer

Length/number of elements — len(obj) gives the number of items in a sequence/collection.

Answer

Last element

Answer

Sum

Answer

First element

Question 2

A patient frequently experiences severe anxiety attacks without any identifiable external trigger or conscious reason. A psychodynamic perspective would suggest that these attacks might be rooted in which part of the mind?

Accepted Answer

C. The unconscious mind, containing repressed conflicts or unresolved issues. — In psychodynamic theory, the unconscious mind holds thoughts, memories, and desires that are outside of conscious awareness but can still profoundly influence behavior and emotional states. Unexplained anxiety attacks are often attributed to repressed conflicts or unresolved issues residing in the unconscious. The conscious mind deals with current awareness, the preconscious with accessible memories, and the superego with moral judgments.

Answer

A. The conscious mind, due to recent stressful events.

Answer

B. The preconscious mind, holding easily retrievable memories.

Answer

D. The superego, enforcing moralistic ideals.

Question 3

Mendeleev is associated with:‌​‍

Accepted Answer

Periodic Table — Dmitri Mendeleev created the Periodic Table of Elements in 1869, arranging elements by atomic weight and predicting undiscovered elements.‌​‍

Answer

Theory of Relativity

Answer

Atomic Theory

Answer

Laws of Motion

Question 4

SN2 reaction:‌​‍

Accepted Answer

One-step concerted with inversion of configuration — Rate = k[substrate][nucleophile]. ‌​‍1° halides, polar aprotic solvents. 'Walden inversion'.

Answer

Via carbocation

Answer

Two-step

Answer

Electrophilic

Question 5

Number of bones in an adult human body is:‌​‍

Accepted Answer

206 — Adult human skeleton has 206 bones; infants have ~270 that fuse over time.‌​‍

Answer

256

Answer

300

Answer

186

Question 6

Silent Valley in:‌​‍

Accepted Answer

Palakkad — Palakkad district.‌​‍

Answer

Idukki

Answer

Wayanad

Answer

Thrissur

Question 7

Which of the following are included in anxiety disorders?‌​‍

Accepted Answer

Generalised anxiety, Panic, Phobia, OCD (earlier), PTSD (earlier) — DSM-5 separated OCD and PTSD from anxiety category. ‌​‍Cognitive-behavioral therapy effective.

Answer

Only depression

Answer

Only schizophrenia

Answer

Personality

Question 8

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 9

Alappuzha famous for:‌​‍

Accepted Answer

Backwaters, houseboats — Venice of East.‌​‍

Answer

Beaches only

Answer

Tea

Answer

Spices

Question 10

In the 5E model, a student raises a question about the limitations of a scientific theory during the 'Elaborate' phase. How should the teacher respond to align with constructivist principles?

Accepted Answer

D. Assign individual research on the theory's history as homework — Constructivism values collaborative exploration of theory limitations during the 'Elaborate' phase. Distractors like 'peer discussion' are wrong because they should be guided exploration, not just discussion.

Answer

A. Provide a detailed lecture on the theory immediately to clarify doubts

Answer

B. Encourage peer discussion to explore the limitations of the theory

Answer

C. Redirect the student to focus on practical applications of the theory

LGS Mixed Practice Test #602