उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What is an electrolyte?

1. AA substance that forms ions and conducts electricity when dissolved in water
2. BA substance that dissolves as whole molecules without forming any ions
3. CA gas that dissolves in blood
4. DA metal that conducts electricity as a solid

What are the usual units of molar mass?

1. Amol/g
2. Bg/mol
3. Cmol/L
4. Dg/L

Which element has the symbol Fe?

1. AFrancium
2. BFluorine
3. CIron
4. DFermium

When the diaphragm contracts and the chest cavity gets bigger, what happens to the air pressure inside the lungs?

1. AIt falls, so air flows in
2. BIt falls, so air flows out
3. CIt does not change
4. DIt rises, so air flows in

Why does stirring help a solid dissolve faster?

1. AIt increases the amount of solute that can dissolve in total
2. BIt turns the solid into a liquid
3. CIt brings fresh solvent into contact with the solid's surface
4. DIt raises the temperature of the solvent by friction a great deal

Which type of radiation can be stopped by a sheet of paper?

1. ABeta particles (fast electrons)
2. BAlpha particles
3. CX-rays
4. DGamma rays

A mixture contains sand, salt and water. Which sequence separates all three?

1. AUse a magnet to remove the salt, then filter the sand
2. BDistil first to remove the sand, then filter out the salt
3. CEvaporate all the water first, then filter the salt away from the dry sand
4. DFilter to remove the sand, then distil the filtrate to collect water and leave salt

तांबे के तार के टुकड़े में किस प्रकार का आबंधन होता है?

1. Aतांबे के परमाणुओं के बीच हाइड्रोजन आबंधन
2. Bतांबे और क्लोराइड आयनों के बीच आयनिक आबंधन
3. Cधात्विक आबंधन: इलेक्ट्रॉनों के समुद्र में आयन
4. Dकेवल दो परमाणुओं के बीच साझा युग्मों वाला सहसंयोजी आबंधन