उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What is osmosis?

1. AThe breaking of a solid into ions
2. BThe movement of water across a semipermeable membrane
3. CThe movement of solute particles against a gradient using energy
4. DThe dissolving of a gas in a liquid

Which type of radiation is the most penetrating?

1. AAlpha particles
2. BThey are all equally penetrating
3. CBeta particles
4. DGamma rays

द्रव से गैस में परिवर्तन को क्या कहते हैं?

1. Aवाष्पन
2. Bगलन
3. Cसंघनन
4. Dजमना

Which coefficients balance __KClO₃ → __KCl + __O₂?

1. A1, 1, 1
2. B1, 1, 3
3. C2, 2, 3
4. D2, 1, 3

A gas mixture contains nitrogen at 600 mmHg, oxygen at 150 mmHg and other gases at 10 mmHg. What is the total pressure?

1. A760 mmHg
2. B600 mmHg
3. C750 mmHg
4. D253 mmHg

Which property stays the same whether you have a small sample or a large sample of a pure substance?

1. ADensity
2. BMass
3. CVolume
4. DTotal heat content

Magnesium burns as 2Mg + O₂ → 2MgO. What mass of MgO (40 g/mol) forms from 48 g of Mg (24 g/mol)?

1. A160 g
2. B48 g
3. C80 g
4. D40 g

Starch and cellulose are both made entirely of glucose units, yet humans can digest starch but not cellulose. Why?

1. ACellulose is really made of amino acids, not glucose, so stomach acid cannot break it
2. BStarch contains nitrogen, which makes it easier to digest
3. CThe glucose units are linked differently, and humans lack an enzyme to break cellulose's links
4. DCellulose dissolves in water, so it is lost from the gut