Science and Tech - Prelims PYP Part 9 - 2008-2023

Welcome to your Science and Tech – Prelims PYP Part 9 – 2008-2023

1.

2023,Science & Tech

‘Microsatellite DNA’ is used in the case of which one of the following?

a. Studying the evolutionary relationships among various species of fauna

b. Stimulating ‘stem cells’ to transform into diverse functional tissues

c. Promoting clonal propagation of horticultural plants

d. Assessing the efficacy of drugs by conducting series of drug trials in a population

2.

2023,Science & Tech

‘Aerial metagenomics’ best refers to which one of the following situations?

a. Collecting DNA samples from air in a habitat at one go

b. Understanding the genetic makeup of avian species of a habitat

c. Using air-borne devices to collect blood samples from moving animals

d. Sending drones to inaccessible areas to collect plant and animal samples from land surfaces and water bodies

3.

2023,Science & Tech

“Wolbachia method" is sometimes talked about with reference to which one of the following?

a. Controlling the viral diseases spread by mosquitoes

b. Converting crop residues into packing material

c. Producing biodegradable plastics

d. Producing biochar from thermo-chemical conversion of biomass

4.

2023,Science & Tech

About three-fourths world's cobalt, a metal required for the manufacture of batteries for electric motor vehicles, is produced by:

a. Argentina

b. Botswana

c. the Democratic Republic of the Congo

d. Kazakhstan

5.

2009,Science & Tech

Which one of the following types of waves are used in a night vision apparatus?

(a) Radio waves

(b) Microwaves

(c) Infra-red waves

(d) None of the above

6.

2009,Science & Tech

Which one among the following has the highest energy?

(a) Blue light

(b) Green light

(c) Red light

(d) Yellow light

7.

2009,Science & Tech

In the context of Indian defence, consider the following statements:

1. The Shourya missile flies with a speed of more than 8 Mach.
2. The range of Shourya missile is more than 1600 km.
Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

8.

2009,Science & Tech

In a dry cell (battery), which of the following are used as electrolytes?

(a) Ammonium chloride and Zinc chloride

(b) Sodium chloride and Calcium chloride

(c) Magnesium chloride and Zinc chloride

(d) Ammonium chloride and Calcium chloride

9.

2009,Science & Tech

WiMAX is related to which one of the following?

(a) Biotechnology

(b) Space technology

(c) Missile technology

(d) Communication technology

10.

2009,Science & Tech

Which one of the following is used as an explosive

(a) Phosphorus trichloride

(b) Mercuric oxide

(c) Graphite

(d) Nitroglycerine

11.

2009,Science & Tech

Who of the following scientists proved that the stars with mass less than 1.44 times the mass of the Sun end up as White Dwarfs when they die?

(a) Edwin Hubble

(b) S. Chandrashekhar

(c) Stephen Hawking

(d) Steven Weinberg

12.

2009,Science & Tech

Which one of the following planets has largest number of natural satellites or moons?

(a) Jupiter

(b) Mars

(c) Saturn

(d) Venus

13.

2009,Science & Tech

Consider the following statements:

1. INS Sindhughosh is an aircraft carrier.
2. INS Viraat is a submarine.
Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

14.

2009,Science & Tech

India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier?

(a) Australia

(b) Canada

(c) China

(d) Japan

15.

2008,Science & Tech

ISRO successfully conducted a rocket test using cryogenic engines in the year 2007. Where is the test-stand used for the purpose located?

(a) Balasoren

(b) Thiruvananthapuram

(c) Mahendragiri

(d) Karwar