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Maths QUESTION #2820

If $a : b = 3 : 4$ and $b : c = 6 : 7$, find $a : b : c$.

9:12:14✔️
3:04:07
6:08:07
3:06:07

Correct Answer Logic:

$a:b = 3:4$ and $b:c = 6:7$. Make $b$ common: $b = \text{LCM}(4,6) = 12$. $a:b = 9:12$ and $b:c = 12:14$. So $a:b:c = 9:12:14$.

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Education QUESTION #11615

Question 2

The process by which knowledge is actively constructed in the mind of the learner, rather than passively received, is known as:

Realism
Behaviorism
Constructivism✔️
None of these

Correct Answer Logic:

Constructivism holds that learners build their own understanding and knowledge through their experiences, and then reflect on those experiences. Key theorists include Piaget and Vygotsky. Behaviorism focuses on observable behaviors and stimulus-response patterns, while Realism is a philosophical stance about the nature of the external world.

Correct Answer: C — Constructivism.

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Maths QUESTION #7660

Question 3

Meher saves Rs 4 in first week, Rs 13 in the second week, and Rs 22 in the third week. In which week will her savings reach Rs 130?

8th week
10th week✔️
12th week
None of these

Correct Answer Logic:

This is an arithmetic progression with first term $a = 4$ and common difference $d = 13 - 4 = 9$. The nth term is given by $a_n = a + (n-1)d = 4 + (n-1)9 = 130$. Solving: $9(n-1) = 126$, so $n-1 = 14$, giving $n = 15$. Wait, let me recalculate: $4 + 9(n-1) = 130$ gives $9n - 9 = 126$, so $9n = 135$ and $n = 15$. Hmm, this doesn't match options either. Actually, checking the pattern: Week 10 would be $4 + 9(9) = 4 + 81 = 85$, not 130. The answer appears to be beyond the given options.

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Chemistry QUESTION #1002

Question 4

Statement (I): Nitrogen, sulphur, halogen and phosphorus present in an organic compound are detected by Lassaigne's Test. Statement (II): The elements present in the compound are converted from covalent form into ionic form by fusing the compound with Magnesium in Lassaigne's test.

Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true but Statement II is false✔️

Correct Answer Logic:

Statement I is correct — N, S, halogens, and P are detected by Lassaigne's test. Statement II is false — the compound is fused with sodium (Na), not magnesium (Mg), to convert covalent bonds into ionic form (e.g., $\text{NaCN, Na}_2\text{S, NaX}$).

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Library Sciences QUESTION #1506

Question 5

In the context of RDA and FRBR, 'manifestation' refers to which of the following?

The abstract intellectual content of a work
The physical embodiment of an expression of a work✔️
A single exemplar of a manifestation
The realization of a work in signs or notations

Correct Answer Logic:

In RDA (based on FRBR), 'Manifestation' refers to the physical embodiment of an expression — for example, a particular published edition of a book. It is distinct from the abstract 'Work' and the specific physical 'Item'.

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CISA QUESTION #1785

Question 6

What is the primary objective of continuous auditing within an IS environment?

To support managers with automated reporting tools✔️
To govern and manage the broader organization
To challenge stated assurances through ongoing automated testing
To coordinate all daily audit team activities

Correct Answer Logic:

Continuous auditing employs ongoing automated testing to verify that security controls and technical modifications remain active and functioning. Tools such as the Security Controls Automation Protocol (SCAP) re-verify installed security configurations after every hotfix, patch, or software update — providing real-time assurance rather than periodic snapshots.

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Math Physics Chemistry Biology QUESTION #11317

Question 7

Which of the following is a dominant gene?

A✔️
B
C
D

Correct Answer Logic:

Gene A is an example of a dominant gene.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2563

Question 8

According to the Offences and Penalties Schedule, if a registered person fails or refuses to issue a tax invoice and commits THREE acts of such default, the additional consequence is:

Cancellation of registration
Business premises shall be liable to be sealed for a period which may extend to one month✔️
Compulsory audit for three years
Personal liability for all tax due

Correct Answer Logic:

Entry No. 17 provides that in case of three acts of such default (failure to issue tax invoice), in addition to the monetary penalty, the business premises shall be liable to be sealed for a period which may extend to one month.

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MBBS QUESTION #10325

Question 9

Lead poisoning classically inhibits which two enzymes of the heme biosynthetic pathway, producing a microcytic anemia with basophilic stippling of red blood cells?

ALA dehydratase and ferrochelatase✔️
ALA synthase and porphobilinogen deaminase
Uroporphyrinogen synthase and coproporphyrinogen oxidase only
Enzymes of globin chain synthesis exclusively, sparing heme synthesis entirely

Correct Answer Logic:

Lead inhibits both ALA dehydratase (early pathway) and ferrochelatase (final step, insertion of iron into protoporphyrin IX), impairing heme synthesis and causing accumulation of protoporphyrin and delta-ALA; the resulting sideroblastic-type microcytic anemia with basophilic stippling is a classic finding in childhood lead poisoning.

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HR and Management QUESTION #6429

Question 10

According to the text, the largest single expense in most organizations is:

Raw materials and inventory costs
Technology and infrastructure investment
Labor costs✔️
Marketing and sales expenses

Correct Answer Logic:

The text explicitly states that the largest single expense in most organizations is labor cost, which is often considerably higher than necessary due to problems like absenteeism, tardiness, and discrimination. This makes effective HRM critical for cost management.

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Academic/Professional (Social Sciences) QUESTION #6491

Question 11

Which of the following is an example of a 'Secondary Group'?

A nuclear family
A group of close friends
A professional association✔️
A playgroup

Correct Answer Logic:

Secondary groups are larger, more impersonal, and usually task-oriented or goal-directed.

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General Knowledge QUESTION #4769

Question 12

The permanent Secretariat of SAARC is located in which city?

Kathmandu✔️
Dhaka
Delhi
Islamabad

Correct Answer Logic:

The SAARC Secretariat has been permanently located in Kathmandu, Nepal since its establishment in 1987.

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General Knowledge QUESTION #8847

Question 13

The word 'Alumni' denotes:

Plural of aluminum substance
A former student (plural)✔️
Celebration of trade unionism
Renowned education institution

Correct Answer Logic:

Alumni are former students of a school or university.

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Math (Module-1) QUESTION #5466

Question 14

The scatterplot shows $x$ and $y$ with a negative linear trend. Which equation is the most appropriate linear model?

$y = 0.9 + 9.4x$
$y = 0.9 - 9.4x$
$y = 9.4 + 0.9x$
$y = 9.4 - 0.9x$✔️

Correct Answer Logic:

A negative linear trend requires a negative slope. Option 4 has a negative slope ($-0.9$) and a reasonable intercept.

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Professional QUESTION #1831

Question 15

Under Section 9(3), promotion to posts in basic pay scales 20 and 21 and equivalent shall be made on the recommendations of a Selection Board. Who heads this Selection Board?

The Federal Secretary of the relevant Ministry
The Chief Secretary of the concerned Province
The Chairman, Federal Public Service Commission✔️
The Principal Accounting Officer of the Ministry

Correct Answer Logic:

Section 9(3) added by Ordinance No. XLIII of 2000 specifies that promotion to posts in BPS-20 and 21 and equivalent shall be made on the recommendations of a Selection Board which shall be headed by the Chairman, Federal Public Service Commission — not a Ministry or Division official.

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Mathematics QUESTION #1269

Question 16

The Cauchy-Riemann equations in polar form are:

$\dfrac{\partial u}{\partial r}=\dfrac{\partial v}{\partial\theta},\quad \dfrac{\partial u}{\partial\theta}=-\dfrac{\partial v}{\partial r}$
$\dfrac{\partial u}{\partial r}=\dfrac{1}{r}\dfrac{\partial v}{\partial\theta},\quad \dfrac{\partial u}{\partial\theta}=-r\dfrac{\partial v}{\partial r}$✔️
$r\dfrac{\partial u}{\partial r}=\dfrac{\partial v}{\partial\theta},\quad \dfrac{\partial u}{\partial\theta}=-r\dfrac{\partial v}{\partial r}$
$\dfrac{\partial u}{\partial r}=\dfrac{\partial v}{\partial\theta},\quad r\dfrac{\partial u}{\partial\theta}=\dfrac{\partial v}{\partial r}$

Correct Answer Logic:

In polar coordinates $z=re^{i\theta}$, the Cauchy-Riemann equations become: $\dfrac{\partial u}{\partial r}=\dfrac{1}{r}\dfrac{\partial v}{\partial\theta}$ and $\dfrac{1}{r}\dfrac{\partial u}{\partial\theta}=-\dfrac{\partial v}{\partial r}$. These are the standard polar C-R equations.

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Math Physics Chemistry Biology QUESTION #4276

Question 17

Which of the following is the auditory relay centre and also controls reflex movement of eyes?

Forebrain
Cerebellum
Midbrain✔️
Thalamus

Correct Answer Logic:

The midbrain contains the inferior colliculi (auditory relay) and superior colliculi (visual reflex/eye movement control).

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Math Physics Chemistry Biology QUESTION #4309

Question 18

Which property of water helps in moderating Earth's climate and maintaining stable temperature in aquatic environments?

Low viscosity
High specific heat capacity✔️
High surface tension
High polarity

Correct Answer Logic:

Water has a high specific heat capacity, meaning it can absorb or release large amounts of heat with minimal temperature change, moderating climate and stabilizing aquatic temperatures.

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Administration QUESTION #9575

Question 19

A government privatizes its national airline but retains a 'golden share' that gives it veto power over major strategic decisions. Which privatization theory most accurately describes this arrangement?

Full divestiture theory — the state has completely transferred ownership to private hands
Partial privatization theory — the state retains strategic control while transferring operational risk and efficiency incentives to private management✔️
Corporatization theory — the airline is restructured as a state-owned enterprise without private equity
Franchising theory — the state licenses private operators to run the airline under government-set conditions

Correct Answer Logic:

Partial privatization transfers equity to private investors while the state retains a strategic stake (golden share) to protect national interest. This is distinct from full divestiture (complete exit), corporatization (no private ownership) and franchising (no equity transfer). The golden share mechanism is the defining feature.

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Chemistry QUESTION #7502

Question 20

Match the compounds in Item I with their correct detection reagents in Item II:

Item I (Compound)	Item II (Reagent)
(A) Lysine	(P) 1-naphthol
(B) Furfural	(Q) Ninhydrin
(C) Benzyl alcohol	(R) KMnO$_4$
(D) Styrene	(S) Ceric ammonium nitrate

(A)→(Q); (B)→(P); (C)→(S); (D)→(R)✔️
(A)→(Q); (B)→(P); (C)→(R); (D)→(S)
(A)→(R); (B)→(P); (C)→(Q); (D)→(S)
(A)→(Q); (B)→(R); (C)→(S); (D)→(P)

Correct Answer Logic:

Matching logic:

Lysine is an amino acid — detected by ninhydrin (Q), which gives a purple colour with primary amines/amino acids.
Furfural is an aldehyde from furan — detected by 1-naphthol (P) via the Tollens-type or colour reaction specific to furfural.
Benzyl alcohol (PhCH$_2$OH) is a primary alcohol — detected by ceric ammonium nitrate (S), which gives a red colour with alcohols.
Styrene (Ph–CH=CH$_2$) has a C=C bond — oxidized by KMnO$_4$ (R), which gets decolourized.

Correct match: (A)→(Q), (B)→(P), (C)→(S), (D)→(R)

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