Endothermic reactions are those in which ________.

Related Mcqs:

1. Water is a universal solvent for what reactions?

   A. Chemical
   B. Biochemical 
   C. Physical
   D. Nuclear

   Submitted by: WIQAR AHMAD

2. The thermosphere extends from an altitude of ________ to the base of ________ at ________?

   A. 75 km, Mesosphere, 670 km
   B. 80 km, Ionosphere, 680 km
   C. 85 km, Exosphere, 690 km
   D. 90 km, Ozone Layer , 690 km

   Submitted by: Muhammad Abdullah

3. Approximate age of earth is ________?

   A. 4.14 billion years
   B. 4.64 billion years
   C. 4.54 billion years
   D. 4.34 billion years

   Submitted by: Kashif Ashraf

4. Jupiter has ________ known moons.

   A. 62
   B. 73
   C. 79
   D.53

   Submitted by: Muhammad Awais Tariq

5. Gravity setting chambers are used in industries to remove ________?

   A. NOx
   B. SOx
   C. CO
   D. Suspended particulate matter

   Submitted by: Rashid Mehmood

6. Dinosaurs and many other species were extinct about ________ years ago.

   A. 55 million
   B. 66 million
   C. 75 million
   D. 85 million

   Submitted by: Hafeez Alam Saila

7. During rainy season Wooden doors are difficult to open or closure because of ________ ?

   A. Plasmolysis
   B. Imbibition
   C. Osmosis
   D. Diffusion

   Submitted by: Rashid Mehmood

8. A mixture of sand and naphthalene can be separated by ________ ?

   A. Chromatography
   B. Fractional distillation
   C. Sublimation
   D. None of these

   Submitted by: Rashid Mehmood

9. What is the third most common gas found in the air we breathe ________ ?

   A. Hydrogen
   B. Neon
   C. Carbondioxide
   D. Argon

   Submitted by: Rashid Mehmood

10. What is the molecular formula for Nitric acid ________ ?

    A. HNO2
    B. HNO3
    C. HN2O2
    D. H2NO4

    Submitted by: Rashid Mehmood