Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by whitelisting our website.

February 2019

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is ______________ °C?

Chemical Engineering Basics /
In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is ______________ °C?

A. 20
B. 60
C. 120
D. ∞

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is ______________ °C? Read More »

Chemical Engineering Basics

For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be _________________ toys ?

Chemical Engineering Basics /
For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be _________________ toys ?

A. 250
B. 500
C. 1000
D. 3000

For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be _________________ toys ? Read More »

Chemical Engineering Basics

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about ____________________ °C?

Chemical Engineering Basics /
A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about ____________________ °C?

A. 370
B. 340
C. 320
D. 300

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about ____________________ °C? Read More »

Chemical Engineering Basics

Ayesha Ayaz won Bronze medal in 7th Fujairah Taekwondo UAE at the age of________?

Pakistan Current Affairs MCQs /
Ayesha Ayaz won Bronze medal in 7th Fujairah Taekwondo UAE at the age of________?

A. 5
B. 6
C. 7
D. 8

At the age of eight, when most kids spend their time on smartphones, Ayesha Ayaz made her international debut as Pakistan’s youngest taekwondo practitioner.
Ayesha emerged as Pakistan’s most promising star after becoming the youngest competitor to win a bronze medal for her country at the seventh edition of the Fujairah Taekwondo Open Championship in the UAE early this month.

Ayesha Ayaz won Bronze medal in 7th Fujairah Taekwondo UAE at the age of________? Read More »

Pakistan Current Affairs MCQs

The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?

Chemical Engineering Basics /
The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?

A. Carbon
B. Manganese
C. Both A nor B
D. Neither A nor B

The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel? Read More »

Chemical Engineering Basics

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?

Chemical Engineering Basics /
Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?

A. Black
B. Silver grey
C. Green
D. Yellow

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________? Read More »

Chemical Engineering Basics

Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?

Chemical Engineering Basics /
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?

A. Tensile strength
B. Compressive strength
C. Young’s modulus
D. Thermal co-efficient of expansion

Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________? Read More »

Chemical Engineering Basics

While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ?

Chemical Engineering Basics /
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ?

A. 1800
B. 2000
C. 2400
D. 3000

While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ? Read More »

Chemical Engineering Basics