LDC Mixed Practice Test #700

Question 1

What is the conjugate of z = 2 - 3i?‌​‍

Accepted Answer

2 + 3i — Replace i with -i. |z|² = z·z̄.‌​‍

Answer

3 + 2i

Answer

-2 + 3i

Answer

-2 - 3i

Question 2

Kalki Subramaniam's activism spans transgender rights and:‌​‍

Accepted Answer

Arts, writing, and visibility for gender minorities — Kalki is a writer, artist, actor and founder of Sahodari Foundation (2007).‌​‍

Answer

Journalism

Answer

Sports

Answer

Wildlife

Question 3

A teacher observes that a typically calm 16-year-old student frequently experiences intense mood swings, from extreme happiness to sudden irritability, often in response to minor events. Which explanation is most developmentally appropriate for this observation?

Accepted Answer

B. These mood swings are a normal part of hormonal changes and emotional development during adolescence. — Intense mood swings are a common and normal aspect of adolescent emotional development, largely influenced by hormonal changes and the ongoing development of emotional regulation skills. Attributing it to a personality disorder, attention-seeking, or lack of discipline without further evidence is premature and generally inaccurate for typical adolescent development.

Answer

A. The student is likely experiencing early signs of a personality disorder.

Answer

C. The student is deliberately seeking attention through dramatic behavior.

Answer

D. This indicates a lack of parental discipline and guidance.

Question 4

The four Dakshin-Dravida languages are:

Accepted Answer

Tamil, Kannada, Tulu, Malayalam — The South Dravidian branch: Tamil, Kannada, Tulu, Malayalam.

Answer

Tamil, Kannada, Gondi, Malayalam

Answer

Tamil, Kannada, Toda, Malayalam

Answer

Tamil, Kannada, Malto, Malayalam

Question 5

A school conducts a final examination at the end of the academic year to determine promotion to the next grade. Simultaneously, teachers maintain portfolios of student work throughout the year and provide weekly comments on their progress. The final examination serves as a ________ assessment, while the portfolio and weekly comments serve as ________ assessment.

Accepted Answer

C. summative; formative — The final examination at the end of the year for promotion is a classic example of summative assessment, as it evaluates learning outcomes and certifies achievement. The ongoing maintenance of portfolios and weekly comments providing feedback for progress are characteristic of formative assessment, aimed at improving learning during the instructional process. Diagnostic assessment identifies initial knowledge gaps, and placement assessment determines appropriate course levels.

Answer

A. formative; summative

Answer

B. diagnostic; formative

Answer

D. summative; diagnostic

Question 6

Synonym of 'happy':‌​‍

Accepted Answer

Joyful — Happy = joyful, cheerful, content, glad.‌​‍

Answer

Sad

Answer

Tired

Answer

Angry

Question 7

Deepest freshwater lake:

Accepted Answer

Baikal — Baikal 1642m.

Answer

Tanganyika

Answer

Vostok

Answer

Issyk-Kul

Question 8

WHO HQ:‌​‍

Accepted Answer

Geneva — Geneva, Switzerland.‌​‍

Answer

New York

Answer

Paris

Answer

London

Question 9

OSI reference model layers:‌​‍

Accepted Answer

7 — Physical, Data link, Network, Transport, Session, Presentation, Application — ISO standard. ‌​‍TCP/IP model has 4 (Network Access, Internet, Transport, Application). Most used in practice.

Answer

4

Answer

5

Answer

3

Question 10

Total utility is maximum when marginal utility is:

Accepted Answer

Zero — At peak of total utility curve, MU = 0. Beyond this, additional consumption reduces total utility (negative MU).

Answer

Maximum

Answer

Negative

Answer

Unit

LDC Mixed Practice Test #700