DCOA Mixed Practice Test #799

Question 1

Glycolysis takes place in the:‌​‍

Accepted Answer

Cytoplasm — Glycolysis (glucose → 2 pyruvate) is cytoplasmic and does not need O₂.‌​‍

Answer

Endoplasmic reticulum

Answer

Nucleus

Answer

Mitochondrial matrix

Question 2

C4 plants:‌​‍

Accepted Answer

Higher photosynthetic efficiency — Sugarcane, maize, sorghum — efficient in hot dry conditions.‌​‍

Answer

Only desert

Answer

Lower

Answer

Only tropical

Question 3

The Great Pyramid of Giza was built by Pharaoh:‌​‍

Accepted Answer

Khufu (Cheops) — Pyramid of Khufu (c. ‌​‍2560 BCE), tallest human-made structure for over 3,800 years. Part of Giza complex (3 pyramids + Sphinx).

Answer

Ramses II

Answer

Cleopatra

Answer

Tutankhamun

Question 4

The most effective mechanism by which proper handwashing with soap and water prevents the spread of infection is:

Accepted Answer

B. Mechanically removing and inactivating microorganisms — Handwashing with soap and water works primarily by mechanically dislodging and rinsing away microorganisms from the skin surface, and the soap helps to inactivate some pathogens. It does not necessarily kill all bacteria, create a lasting chemical barrier, or primarily aim to improve skin texture, but rather physically removes infectious agents.

Answer

A. Killing all bacteria on the skin surface

Answer

C. Creating a protective chemical barrier

Answer

D. Improving skin texture and health

Question 5

A teacher uses a quiz at the end of a chapter to evaluate student understanding of the topic. This type of assessment is best classified as:

Accepted Answer

C. Summative assessment — Quizzes conducted periodically to check understanding and provide feedback are formative assessments. Summative assessment (C) occurs at the end of a larger unit or course. Diagnostic assessment (A) identifies learning gaps at the start, and ipsative assessment (D) compares a student’s current performance with their own past performance.

Answer

A. Diagnostic assessment

Answer

B. Formative assessment

Answer

D. Ipsative assessment

Question 6

India's national tree is:

Accepted Answer

Banyan — Indian Banyan (Ficus benghalensis) is the national tree.

Answer

Neem

Answer

Mango

Answer

Peepul

Question 7

The first cyber police station in India was in:‌​‍

Accepted Answer

Bangalore — Bangalore had India's first cyber crime police station.‌​‍

Answer

Delhi

Answer

Mumbai

Answer

Thiruvananthapuram

Question 8

Repo rate (early 2026):‌​‍

Accepted Answer

6.25% — RBI cut repo rate to 6.25% in Feb 2025.‌​‍

Answer

6.5%

Answer

7%

Answer

6.75%

Question 9

The instrument used to measure earthquakes is:‌​‍

Accepted Answer

Seismograph — Seismograph (seismometer) measures earthquake waves. ‌​‍Richter Scale measures earthquake magnitude.

Answer

Barometer

Answer

Anemometer

Answer

Hydrometer

Question 10

The Crusades were fought between believers of Islam and Christianity primarily over which holy city?‌​‍

Accepted Answer

Jerusalem — Jerusalem, considered holy by both religions, was the main focus of the Crusades (11th–13th century).‌​‍

Answer

Rome

Answer

Mecca

Answer

Constantinople

DCOA Mixed Practice Test #799