NEET-PG 2013 Practice Questions

Q: Critical temperature for liquid nitrogen is ?

-147°C. ***-147°C*** - The **critical temperature** is the temperature above which a gas cannot be liquefied, no matter how much pressure is applied. For **liquid nitrogen**, this value is approximately **-147°C**. - At temperatures above **-147°C**, nitrogen exists only in its gaseous phase. *36.5°C* - This temperature is close to **human body temperature** and is not relevant to the critical temperature of nitrogen. - Nitrogen would be in a gaseous state at this temperature and below its critical pressure. *-20°C* - While a low temperature, **-20°C** is still well above nitrogen's **critical temperature**. - At **-20°C**, nitrogen would be a gas unless subjected to very high pressures. *-242°C* - This temperature is below the **critical temperature** of nitrogen, but it is also below its **boiling point** of **-196°C**. - At **-242°C**, nitrogen would be a liquid, but this value is not its critical temperature.

Q: The delusion that involves the belief that a familiar person has been replaced by someone else is known as?

Capgras syndrome. ***Capgras syndrome*** - This **delusional misidentification syndrome** is characterized by the belief that a familiar person (e.g., a spouse, child, or parent) has been replaced by an identical imposter. - It often occurs in individuals with **schizophrenia**, **dementia**, or following **brain injury**. *Cotard syndrome* - This syndrome involves a nihilistic delusion where the individual believes they are **dead**, do not exist, or have lost their organs or blood. - It is often associated with severe **depression**, psychosis, or neurological disorders. *Othello syndrome* - Also known as **delusional jealousy**, this involves the unfounded belief that one's partner is being unfaithful. - It is a **primary delusional disorder** but can also be seen in conditions like alcohol dependence or neurodegenerative diseases. *Fregoli syndrome* - This is another **delusional misidentification syndrome** where the person believes that different people are actually the same person in disguise. - It is the opposite of Capgras syndrome and may occur in **schizophrenia** or **organic brain disorders**.

Q: Which of the following is the most classic example of a delusion?

Othello syndrome. ***Othello syndrome*** - **Othello syndrome**, also known as **delusional jealousy**, is characterized by a *fixed, unfounded belief* that one's partner is being unfaithful. - This is a classic example of a **delusion** because it involves a **fixed, false belief** that is firmly held despite clear evidence to the contrary and is not amenable to logic or persuasion. - The syndrome demonstrates all core features of a delusion: **unshakeable conviction**, **imperviousness to contradictory evidence**, and **significant impact on behavior**. *De Clérambault's syndrome* - **De Clérambault's syndrome**, or **erotomania**, is a delusional disorder where an individual *believes another person, often of higher status, is in love with them*. - While this is also a classic example of a delusional disorder, **Othello syndrome** is more frequently cited in clinical teaching as the prototypical example of an isolated, circumscribed delusion. *Pyromania* - **Pyromania** is an **impulse control disorder** characterized by recurrent, deliberate fire-setting driven by tension or arousal. - It involves **behavioral impulsivity** and *not a fixed false belief*, thus it is not a delusion. *Kleptomania* - **Kleptomania** is another **impulse control disorder** characterized by recurrent failure to resist urges to steal objects not needed for personal use. - Like pyromania, it represents a **disorder of impulse control** rather than a disorder of thought content or belief system.

Q: What does the term 'Folie-à-deux' refer to?

Sharing of delusion. ***Sharing of delusion*** - **Folie-à-deux**, also known as **shared psychotic disorder**, describes a rare psychiatric syndrome in which a **delusional belief** is transmitted from one individual to another. - It typically occurs between two people in a close relationship, where one individual (the primary case) develops a delusion and the other person (the secondary case) subsequently adopts the same delusion. *Delusion of persecution* - A **delusion of persecution** is a specific type of delusion where an individual believes they are being harmed, harassed, or conspired against by others. - While it can be the content of a shared delusion in folie-à-deux, the term itself refers to the *type* of delusion, not the *sharing* mechanism. *Delusion of double* - "Delusion of double" is not a standard term for folie-à-deux. - This phrase might be confused with **delusional misidentification syndromes** (like Capgras syndrome where a person believes someone has been replaced by an identical impostor), but this is a different concept from shared psychotic disorder. *None of the options* - This option is incorrect because "sharing of delusion" accurately defines folie-à-deux.

Q: All are required to diagnose major depression except?

Nihilistic ideas. ***Nihilistic ideas*** - While nihilistic ideas (e.g., belief that life is meaningless or that nothing matters) can occur in severe depression, they are **not a mandatory diagnostic criterion** for major depressive disorder (MDD). - The diagnosis of MDD requires a specific number of core symptoms, and nihilistic ideation is not listed as one of them in diagnostic manuals like the DSM-5. *Depressed mood* - A **depressed mood** for most of the day, nearly every day, is one of the two **cardinal symptoms** required for a diagnosis of major depressive disorder. - The other cardinal symptom is anhedonia (loss of interest or pleasure). *Insomnia* - **Insomnia** (difficulty falling or staying asleep) or hypersomnia (sleeping excessively) is a common neurovegetative symptom of major depressive disorder and is one of the **nine diagnostic criteria**. - At least 5 of these 9 criteria must be present for a diagnosis, including at least one of the two cardinal symptoms. *Decreased concentration* - **Diminished ability to think or concentrate**, or indecisiveness, is another of the **nine diagnostic criteria** for major depressive disorder. - This cognitive symptom highlights the impact of depression on mental function beyond mood.

Q: Cyclothymia is classified as which type of mood disorder?

Bipolar mood disorder. ***Bipolar mood disorder*** - **Cyclothymia (Cyclothymic Disorder)** is classified under **Bipolar and Related Disorders** in both DSM-5 and ICD-11, making it part of the bipolar spectrum. - It is characterized by **chronic, fluctuating mood disturbances** lasting at least 2 years (1 year in children/adolescents) with numerous periods of hypomanic and depressive symptoms that do not meet full criteria for hypomanic or major depressive episodes. - The alternating, less severe mood swings share the fundamental **bipolar pattern** of mood elevation and depression, hence its classification under bipolar mood disorders. *Major depression* - **Major depressive disorder** is a unipolar mood disorder involving persistent feelings of sadness, loss of interest, and other depressive symptoms that significantly impair daily functioning, **without any episodes of mania or hypomania**. - Cyclothymia involves **mood instability with both elevated and depressed periods**, which distinguishes it from unipolar major depression. *Dysthymia* - **Dysthymia** (now termed **Persistent Depressive Disorder** in DSM-5) is characterized by chronic, low-grade depressive symptoms lasting at least 2 years, **without manic or hypomanic episodes**. - While both involve sub-threshold symptoms, cyclothymia includes periods of **hypomanic symptoms** (elevated mood, increased energy), which are absent in dysthymia. *Persistent mood disorder* - This is a broad, non-specific descriptive term rather than a formal diagnostic category in DSM-5 or ICD-11. - While cyclothymia is indeed a persistent condition, it is **specifically categorized under Bipolar and Related Disorders** due to the presence of both elevated (hypomanic) and depressed mood states.

Q: What is the core feature required for diagnosing a manic episode?

Elevated mood. ***Elevated mood*** - The **DSM-5 criteria** for a manic episode explicitly state that an abnormally and persistently **elevated, expansive, or irritable mood** must be present for at least one week. - This core mood disturbance is what differentiates mania from other psychiatric conditions and is a prerequisite for diagnosis. *Grandiosity* - While **grandiosity** (inflated self-esteem or sense of importance) is a common associated symptom of a manic episode, it is not the sole diagnostic requirement. - It is one of several symptom criteria that must be present in addition to the mood disturbance for a diagnosis of mania. *Decreased appetite* - **Decreased appetite** is generally not a feature of a manic episode; in fact, individuals in a manic state often have an **increased appetite** or engage in impulsive eating due to lack of inhibition. - A decreased appetite is more commonly associated with depressive episodes. *Increased sleep* - **Increased sleep** is contrary to the typical presentation of a manic episode, where individuals often experience a **decreased need for sleep** and can function on very little sleep, feeling energized. - A significant reduction in the need for sleep is a characteristic symptom of mania, not an increase.

Q: Which neurotransmitter is believed to be increased in mania?

Increased dopamine. ***Increased dopamine*** - **Dopamine** is the primary neurotransmitter implicated in the pathophysiology of mania according to the **dopaminergic hypothesis** of mood disorders. - Increased dopaminergic activity in the **mesolimbic and mesocortical pathways** contributes to the core symptoms of mania including **euphoria**, **increased goal-directed activity**, **reduced need for sleep**, **psychosis**, and **impulsivity**. - Evidence includes: response to dopamine antagonists (antipsychotics) in treating mania, and dopamine agonists can precipitate manic episodes. - Studies using neuroimaging and CSF analysis support elevated dopamine activity during manic episodes. *Increased norepinephrine* - While norepinephrine is also increased in mania and contributes to **arousal**, **attention**, and **energy levels**, it is considered a secondary or contributory mechanism rather than the primary pathophysiological change. - The **catecholamine hypothesis** suggests both dopamine and norepinephrine are elevated, but dopamine plays the more central role in the characteristic manic symptoms. *Decreased dopamine* - Decreased dopamine is associated with **depression**, **Parkinson's disease**, and **negative symptoms of schizophrenia**, not mania. - Low dopamine leads to reduced motivation, anhedonia, psychomotor retardation, and lack of energy—the opposite of manic presentation. *Decreased norepinephrine* - Decreased norepinephrine is linked to **depressive states**, characterized by low energy, poor concentration, and reduced arousal. - This is directly contrary to the hyperarousal, excessive energy, and heightened activity seen in mania.

Q: Ganser syndrome is classified under which of the following disorders?

Dissociative disorder. ***Dissociative disorder*** - Ganser syndrome is characterized by a "passing-off" behavior, where the individual gives **approximate or nonsensical answers** to simple questions, often associated with other dissociative symptoms. - While historically difficult to classify, contemporary understanding places it within the spectrum of dissociative disorders due to its features of an altered state of consciousness and a detachment from reality. *OCD* - **Obsessive-compulsive disorder (OCD)** involves recurrent, intrusive thoughts (obsessions) and repetitive behaviors or mental acts (compulsions). - Ganser syndrome does not typically present with the classic symptom profile of obsessions and compulsions. *Conversion disorder* - **Conversion disorder** involves neurological symptoms (e.g., paralysis, blindness, seizures) that are not consistent with neurological disease and are often preceded by psychological stress. - While both involve psychological factors, Ganser syndrome is distinct in its presentation of "answers" that are close but incorrect, rather than physical symptoms. *Schizoid personality disorder* - **Schizoid personality disorder** is characterized by a pervasive pattern of detachment from social relationships and a restricted range of expression of emotions in interpersonal settings. - This disorder primarily affects social functioning and emotional expression, which is different from the specific cognitive and behavioral pattern seen in Ganser syndrome.

Q: Which of the following statements is NOT true about type 1 schizophrenia?

It has a poor prognosis.. ***It has a poor prognosis.*** - This statement is **NOT true** about type 1 schizophrenia, making it the correct answer to this question. - Type 1 schizophrenia is generally associated with a **better prognosis** and good response to antipsychotic medication. - It is characterized by the prominence of **positive symptoms**, which tend to be more responsive to treatment. *It is an acute illness.* - This statement is **TRUE** about type 1 schizophrenia, so it is not the answer. - Type 1 schizophrenia is often characterized by an **acute onset** of symptoms, particularly positive symptoms. - This acute presentation differentiates it from type 2, which typically has a more insidious onset. *Intellect is usually maintained.* - This statement is **TRUE** about type 1 schizophrenia, so it is not the answer. - In type 1 schizophrenia, **cognitive function**, including intellect, is usually better preserved compared to type 2 schizophrenia. - While some cognitive deficits may occur, they are generally less severe and less pervasive than in type 2. *It is characterized by negative symptoms.* - This statement is **FALSE** about type 1 schizophrenia, but it is not the best answer because the prognosis statement is more definitively incorrect. - Type 1 schizophrenia is primarily characterized by the predominance of **positive symptoms**, such as hallucinations, delusions, and disorganized thought. - **Negative symptoms** (e.g., apathy, anhedonia, alogia, blunted affect) are the hallmark of type 2 schizophrenia.

Question 1

Critical temperature for liquid nitrogen is ?

Accepted Answer

-147°C

Answer

36.5°C

Answer

-20°C

Answer

-242°C

Question 2

The delusion that involves the belief that a familiar person has been replaced by someone else is known as?

Accepted Answer

Capgras syndrome

Answer

Cotard syndrome

Answer

Othello syndrome

Answer

Fregoli syndrome

Question 3

Which of the following is the most classic example of a delusion?

Accepted Answer

Othello syndrome

Answer

Pyromania

Answer

Kleptomania

Answer

De Clérambault's syndrome

Question 4

What does the term 'Folie-à-deux' refer to?

Accepted Answer

Sharing of delusion

Answer

Delusion of persecution

Answer

Delusion of double

Answer

None of the options

Question 5

All are required to diagnose major depression except?

Accepted Answer

Nihilistic ideas

Answer

Depressed mood

Answer

Decreased concentration

Answer

Insomnia

Question 6

Cyclothymia is classified as which type of mood disorder?

Accepted Answer

Bipolar mood disorder

Answer

Major depression

Answer

Dysthymia

Answer

Persistent mood disorder

Question 7

What is the core feature required for diagnosing a manic episode?

Accepted Answer

Elevated mood

Answer

Decreased appetite

Answer

Increased sleep

Answer

Grandiosity

Question 8

Which neurotransmitter is believed to be increased in mania?

Accepted Answer

Increased dopamine

Answer

Decreased dopamine

Answer

Increased norepinephrine

Answer

Decreased norepinephrine

Question 9

Ganser syndrome is classified under which of the following disorders?

Accepted Answer

Dissociative disorder

Answer

OCD

Answer

Conversion disorder

Answer

Schizoid personality disorder

Question 10

Which of the following statements is NOT true about type 1 schizophrenia?

Accepted Answer

It has a poor prognosis.

Answer

Intellect is usually maintained.

Answer

It is an acute illness.

Answer

It is characterized by negative symptoms.

NEET-PG 2013

Anesthesiology

Psychiatry