Which of the following statements are true? I. Yellow flames are ideal – McqOptions

MCQOPTIONS

1.	Which of the following statements are true? I. Yellow flames are ideal for heating. II. The substances which vaporise during burning give flames. III. Luminous zone contains unburnt carbon particles. IV. The non-luminous zone has highest temperature.
A.	I, II and III
B.	I, II and IV
C.	II, III and IV
D.	I, III and IV
Answer» D. I, III and IV

Discussion

No Comment Found

Related MCQs

Match the following column: Sr. No. Objects Nature of force Force on falling ball A. Frictional force Force on moving charge B. Muscular force Force on lifting objects C. Electrostatic force Force on sliding ball D. Gravitational force
The given table lists some fuels with their calorific values: Fuel Calorific Value Diesel 45000 LPG 55000 Petrol 45000 Which of the given fuels is the most efficient?
A student named the diagrammatic representation of how an earthquake occurs wrongly. What is the correct sequence starting from the (i)?
Mendel chose a specific plant to carry out his experiment to study the various traits. He chose the plant, because it has number of difference, easy to tell apart and not available in other plants. Which one of the following the plants he used for his study:
Earthquakes at two places A and B were measured by a seismograph which recorded the magnitude as 2 and 4. The magnitude of tremors and the destructive energy at A and B can be compared as
While playing cricket Thomas hurt his palm on trying to catch the ball coming in his direction. On the other hand his friend jack while catching the ball pulls his hand backward, and is not hurt. The reason for this is:
Identify the biggest constellation.
Gibbous moon refers to:
If plastic strips are placed in an electroscope at the place of aluminum strips then:
Brightest star in the earth's night sky is: