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CTET Practice Test: Science-3 - CTET & State TET MCQ


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20 Questions MCQ Test CTET (Central Teacher Eligibility Test) Mock Test Series 2024 - CTET Practice Test: Science-3

CTET Practice Test: Science-3 for CTET & State TET 2024 is part of CTET (Central Teacher Eligibility Test) Mock Test Series 2024 preparation. The CTET Practice Test: Science-3 questions and answers have been prepared according to the CTET & State TET exam syllabus.The CTET Practice Test: Science-3 MCQs are made for CTET & State TET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for CTET Practice Test: Science-3 below.
Solutions of CTET Practice Test: Science-3 questions in English are available as part of our CTET (Central Teacher Eligibility Test) Mock Test Series 2024 for CTET & State TET & CTET Practice Test: Science-3 solutions in Hindi for CTET (Central Teacher Eligibility Test) Mock Test Series 2024 course. Download more important topics, notes, lectures and mock test series for CTET & State TET Exam by signing up for free. Attempt CTET Practice Test: Science-3 | 20 questions in 20 minutes | Mock test for CTET & State TET preparation | Free important questions MCQ to study CTET (Central Teacher Eligibility Test) Mock Test Series 2024 for CTET & State TET Exam | Download free PDF with solutions
CTET Practice Test: Science-3 - Question 1

Alkali metals can - 

Detailed Solution for CTET Practice Test: Science-3 - Question 1

​Alkali metals have one electron in their outer shell so alkali metal can easily lose electrons. 

CTET Practice Test: Science-3 - Question 2

Why does Carbon Tetrachloride have no dipole moment? 

Detailed Solution for CTET Practice Test: Science-3 - Question 2

​Carbon Tetrachloride have no dipole moment because of regular tetrahedral structure. 

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CTET Practice Test: Science-3 - Question 3

Which drug is used as an Antidepressant? 

Detailed Solution for CTET Practice Test: Science-3 - Question 3

​Bupropion is used to treat major depressive disorder and to help people stop smoking.

CTET Practice Test: Science-3 - Question 4

Which of the following gases is heavier than oxygen? 

Detailed Solution for CTET Practice Test: Science-3 - Question 4

​For oxygen, a molecule consists of two oxygen atoms, and has a weight of 2 x 16 = 32. For carbon dioxide, there is one carbon atom (weight 12) and two oxygen atoms (mass 16 x 2) for a total of 44. This means that carbon dioxide should be about 44/32 = 1.375 times (ideally) as heavy as an equivalent volume of oxygen. In reality, carbon dioxide is 1.383 times as heavy as oxygen.Even after solidification carbon di oxide is slightly heavier than similar volume of solid oxygen.

CTET Practice Test: Science-3 - Question 5

Which acid is released when an Ant bites? 

Detailed Solution for CTET Practice Test: Science-3 - Question 5

The acid produced by ants is called formic acid.The name comes from the Latin word for ant, which is “formica.” Chemically, it is a simple carboxylic acid. 

CTET Practice Test: Science-3 - Question 6

Which of the following is not a donor atom? 

Detailed Solution for CTET Practice Test: Science-3 - Question 6

In semiconductor physics, a donor is a dopant atom that, when added to a semiconductor, can form a n-type region. All except aluminium are donor atom. 

CTET Practice Test: Science-3 - Question 7

0 K is equivalent to - 

Detailed Solution for CTET Practice Test: Science-3 - Question 7

​0 K is equivalent to – 273°C. 

CTET Practice Test: Science-3 - Question 8

___________ gives hardness to stainless steel. 

Detailed Solution for CTET Practice Test: Science-3 - Question 8

​Carbon gives hardness to Stainless Steel. 

CTET Practice Test: Science-3 - Question 9

Which of the following is not soluble in water? 

Detailed Solution for CTET Practice Test: Science-3 - Question 9

Lead Sulphate is not soluble in water. 

CTET Practice Test: Science-3 - Question 10

The main constituent of biogas is - 

Detailed Solution for CTET Practice Test: Science-3 - Question 10

​The main constituent of biogas is methane. Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of H2S,H20 (moisture) . 

CTET Practice Test: Science-3 - Question 11

The pH of human blood is between - 

Detailed Solution for CTET Practice Test: Science-3 - Question 11

​The pH of human blood is between 7.35 to 7.45. 

CTET Practice Test: Science-3 - Question 12

Isotope 14C6is associated with- 

Detailed Solution for CTET Practice Test: Science-3 - Question 12

This theory was given by Willard Frank Libby in 1949. To determine the age of wood and bones (the time which elapsed after the death of plant) is called Ratio Carbon Dating. The Half-life of Carbon 14 is 5,730 + 40 years. 

CTET Practice Test: Science-3 - Question 13

Which one of the following pairs is correctly matched? 

Detailed Solution for CTET Practice Test: Science-3 - Question 13

​Pairs is correctly matched as such- Silver Iodide – Artificial rain, Silver Chloride – Horn Silver, Zinc Phosphide – Rat poison, Zinc Oxide – Philosopher’s wool. 

CTET Practice Test: Science-3 - Question 14

In atom, neutron was discovered by: 

Detailed Solution for CTET Practice Test: Science-3 - Question 14

​Neutron is a neutral particle which has no electrical charge. It was discovered by Chadwick in 1932. 

CTET Practice Test: Science-3 - Question 15

The gas used to inflate the tyres of an aircraft is- 

Detailed Solution for CTET Practice Test: Science-3 - Question 15

​Nitrogen gas is used in the tyres of an aeroplane. This is because the nitrogen gas does not support combustion and can assist in preventing wheel fire when the aircraft lands . 

CTET Practice Test: Science-3 - Question 16

Which of these consists carbon? 

Detailed Solution for CTET Practice Test: Science-3 - Question 16

​Coal minerals are divided mainly into four types on the basis of the percentage of Carbon amount- Peat, Lignite, Bituminous and Anthracite. 

CTET Practice Test: Science-3 - Question 17

Of how many carats is the pure gold? 

Detailed Solution for CTET Practice Test: Science-3 - Question 17

​It is an extension of the older carat (Karat in North American spelling) system of denoting the purity of gold by fractions of 24, such as ’18 carat’ for an alloy with 75% (18 parts per 24) pure gold by mass. 

CTET Practice Test: Science-3 - Question 18

Radioactivity was discovered by: 

Detailed Solution for CTET Practice Test: Science-3 - Question 18

​Radioactivity was discovered in 1896 by the French Scientist Henri Becquerel when he was working with phosphorescent materials. 

CTET Practice Test: Science-3 - Question 19

The element found maximum in the soil layer is- 

Detailed Solution for CTET Practice Test: Science-3 - Question 19

​The element found the maximum in the soil layer is Oxygen 46.8% followed by Silicon 27.2%, Calcium 3.65% and Carbon 0.6%. 

CTET Practice Test: Science-3 - Question 20

Which is the most reactive metal? 

Detailed Solution for CTET Practice Test: Science-3 - Question 20

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