DCOA Mixed Practice Test #830

Question 1

Viruses are:‌​‍

Accepted Answer

Non-living outside host, intracellular parasites — Contain DNA or RNA + protein coat. ‌​‍Obligate intracellular parasites. Beijerinck coined 'virus' — TMV first isolated 1935.

Answer

Cells

Answer

Living

Answer

Bacteria

Question 2

Edamalayar dam:

Accepted Answer

Ernakulam — On Periyar's tributary.

Answer

Idukki

Answer

Kottayam

Answer

Palakkad

Question 3

Velu Thampi Dalawa revolted:‌​‍

Accepted Answer

1809 — 1808-09 against British.‌​‍

Answer

1857

Answer

1947

Answer

1891

Question 4

The Kerala Solid Waste Management Project (KSWMP) is a comprehensive initiative aimed at transforming waste management practices in the state. Which of the following statements about KSWMP is **incorrect**?

Accepted Answer

D. KSWMP primarily focuses on the construction of new large-scale sanitary landfills and waste-to-energy incineration plants in every district. — The KSWMP, while modernizing waste infrastructure, emphasizes scientific processing, decentralized management, and resource recovery, rather than primarily focusing on large-scale landfills and incineration plants in every district (Option D). Options A, B, and C accurately describe key aspects of the World Bank-assisted KSWMP, which aims for sustainable waste management across urban and select rural areas.

Answer

A. It receives significant financial assistance from the World Bank for its implementation.

Answer

B. A key objective of the project is to achieve 100% source segregation and scientific processing of waste.

Answer

C. Its geographical scope includes all urban local bodies and selected adjacent grama panchayats in the state.

Question 5

An optic device that inverts image with known magnification, using two lenses, is:‌​‍

Accepted Answer

Compound microscope — Compound microscope has objective + eyepiece for high magnification; inverted real image viewed via eyepiece.‌​‍

Answer

Magnifying glass

Answer

Simple microscope

Answer

Periscope

Question 6

Lakshadweep Islands are composed mainly of:

Accepted Answer

Coral — Lakshadweep consists of coral atolls in the Arabian Sea.

Answer

Volcanic rocks

Answer

Sandstone

Answer

Granite

Question 7

The integrity and fluidity of cell membranes are vital for proper cellular function, including nutrient transport and signal transduction. Biochemically, which class of molecules forms the primary structural bilayer of these membranes?

Accepted Answer

D. Phospholipids — Phospholipids are the main components of cell membranes, forming a bilayer that provides structural integrity and regulates membrane fluidity. While proteins are embedded within the membrane and carbohydrates are on the outer surface, phospholipids constitute the fundamental barrier.

Answer

A. Nucleic acids

Answer

B. Carbohydrates

Answer

C. Proteins

Question 8

If f(x) = 2x + 3, f(2) =

Accepted Answer

7 — 2(2) + 3 = 4 + 3 = 7. Linear function with slope 2, y-intercept 3.

Answer

5

Answer

6

Answer

4

Question 9

The Marshall Plan (1948) was:‌​‍

Accepted Answer

US economic aid (~$13B) to rebuild Western Europe — European Recovery Program (1948-52). ‌​‍Named after Secretary of State George Marshall. Revived Western European economies, strengthened against USSR.

Answer

Military alliance

Answer

Trade agreement

Answer

Peace treaty

Question 10

The Temple Entry Proclamation of 1936 that opened all state-controlled temples to Hindus was issued by:

Accepted Answer

Sri Chithira Thirunal (Travancore) — On 12 November 1936, Sri Chithira Thirunal Balarama Varma proclaimed Temple Entry in Travancore — a historic reform.

Answer

Maharaja of Kochi

Answer

Zamorin of Calicut

Answer

Government of Madras

DCOA Mixed Practice Test #830