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Q:

Which of the following statement(s) about acids is/are CORRECT ?
 
I. They change the color of red litmus to blue.
II. They change the color of blue litmus to red.
III. They have pH value less than 7.
 

A) Only I and III B) Only II and III
C) Only I D) Only II
 
Answer & Explanation Answer: B) Only II and III

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

0 50285
Q:

Which of the following is used in pencils?

A) Silicon B) Phosphorous
C) Graphite D) Charcoal
 
Answer & Explanation Answer: C) Graphite

Explanation:

A pencil is an implement for writing or drawing. It is a thin core of graphite well mixed with clay, inside a wooden body as protective casing that prevents the core from being broken.

Which_of_the_following_is_used_in_pencils1558506948.jpg image

 

 

 

 

 

 

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Filed Under: General Science
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

184 50264
Q:

The electronic dot and cross structure of ethene is ............

 

A) B)
C) D)
 
Answer & Explanation Answer: C)

Explanation:
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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT

0 50262
Q:

Which kind of power accounts for the largest share of power generation in India

A) Hydro - electricity B) Thermal
C) Nuclear D) Solar
 
Answer & Explanation Answer: B) Thermal

Explanation:
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Filed Under: Indian Economy

188 50259
Q:

Group 8A of the periodic table contains the

 

A) least reactive metals B) most reactive nonmetals
C) most reactive metals D) least reactive nonmetals
 
Answer & Explanation Answer: D) least reactive nonmetals

Explanation:

Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo) are present group 8A.

 

They have fully filled orbitals and hence are most stable amongst all the elements in the periodic table and are considered as least reactive least reactive non-metals.

 

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Filed Under: Chemistry
Exam Prep: Bank Exams

1 50251
Q:

Consider the following constituent gases of the atmosphere :

1. Argon

2. Neon

3. Helium

4.Ceirbon dioxide

Which one of the following is the correct ascending sequence of the above gases in terms of the volume percentage?

A) 1-3-2-4 B) 1-4-2-3
C) 4-2-3-1 D) 2-4-1-3
 
Answer & Explanation Answer: B) 1-4-2-3

Explanation:
Composition of Dry Air (Substance, % by volume)
Nitrogen, N2 78.08
Oxygen, O2
20.95
Argon, Ar 0.93
Carbon dioxide, CO2 0.033
Neon, Ne 0.0018
Helium, He 0.00052
Methane, CH4 0.0002
Krypton, Kr 0.00011
Dinitrogen oxide, N2O 0.00005
Hydrogen, H2 0.00005
Ozone, O3 0.000001
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Filed Under: Chemistry
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Q:

The paintings in the Ajanta and Ellora caves are indicative of the development of art under the -

A) Pallavas B) Chalukyas
C) Pandyas D) Rashtrakutas
 
Answer & Explanation Answer: B) Chalukyas

Explanation:
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Filed Under: Indian Culture

597 50216
Q:

___ is the number of shells for elements of the 3rd period.

 

A) 1 B) 0
C) 2 D) 3
 
Answer & Explanation Answer: D) 3

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

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