Q:

What is black when you buy it, red when you use it, and gray when you throw it away?

A) Shoe	B) Charcoal
C) Belt	D) All the above

Answer & Explanation Answer: B) Charcoal

Explanation:

What_is_black_when_you_buy_it,_red_when_you_use_it,_and_gray_when_you_throw_it_away1557491056.jpg image

It is Charcoal which is black when we buy it or when not being used. It gets red in appearance when put in use means to say when burning. And eventually when it's been consumed by fire or after getting burned out or used up, changes into ashes which look grey in color.

Report Error

View Answer Report Error Discuss

Filed Under: Logic Puzzles
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

145 43552

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.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 43533

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

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 43425

Q:

Milk of Magnesia is used as a

A) Laxative	B) Pain killer
C) Sedative	D) Antibiotic

Answer & Explanation Answer: A) Laxative

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 43414

Q:

Out of all known elements, the minimum number is of ______.

A) Metals	B) Non-metals
C) Metalloids	D) No option is correct

Answer & Explanation Answer: C) Metalloids

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 43371

Q:

Which of the following statements are CORRECT?

I. Esters are sweet smelling substance.
II Esters are used in making perfumes.
III. Functional group of ester is R-O-RꞋ.

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: A) Only I and II

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 43370

Q:

Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?

A) Addition reaction	B) Substition reaction
C) Combustion reaction	D) Decomposition reaction

Answer & Explanation Answer: C) Combustion reaction

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 43347

Q:

Plants of which group are predominantly aquatic?

A) Thallophyta	B) Bryophyta
C) Pteridophyta	D) No option is correct

Questions

Quick Links