WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

A solid weighs 4.8g in air, 2.8g in water and 3.2g in Kerosine. The ratio...

Physics
JAMB 2020

A solid weighs 4.8g in air, 2.8g in water and 3.2g in Kerosine. The ratio of density of the solid to that of the kerosine is 

  • A. 2
  • B. \(\frac{3}{2}\)
  • C. \(\frac{2}{3}\)
  • D. 3
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Correct Answer: Option D
Explanation

Relative density of solid

\(\frac{\text{weight of solid}}{\text{weight of an equal volume of water}}\)

= \(\frac{4.8}{4.8 - 2.8}\) 

= \(\frac{4.8}{2}\) = 2.4

Relative density of liquid 

=   \(\frac{\text{Weight  of liquid kerosine}}{\text{Weight of an equal volume of water}}\) 

= \(\frac{4.8 - 3.2}{4.8 - 2.8}\)  = \(\frac{1.6}{2}\) = 0.8

= \(\frac{\text{Ratio of relative density of solid}}{\text{Relative density of Kerosine}}\) 

= \(\frac{\text{density of solid}}{\text{density of Kerosine}}\)

= \(\frac{2.4}{0.8}\) 

= 3

 

 

There is an explanation video available below.


Report an Error Ask A Question Download App
Your School's Whatsapp Group - Join Us now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now

Explanation Video

Post UTME Past Questions Agent
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

Post your Contribution

Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. It will be deleted. To join or start a group, please click here

{{ quote.posted_by.display_name }}
{{ settings.form_textarea_description }}
 
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now