उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What kind of carbon–carbon bonds do alkanes contain?

1. AAt least one double bond
2. BIonic bonds
3. COnly single bonds
4. DAt least one triple bond

Which form of sugar dissolves fastest in a cup of tea?

1. AA large lump of rock sugar
2. BA sugar cube
3. CAll forms dissolve at the same rate
4. DGranulated sugar

अभिक्रिया A + B → AB किस प्रकार की अभिक्रिया दर्शाती है?

1. Aएकल विस्थापन
2. Bवियोजन (अपघटन)
3. Cसंयोजन (संश्लेषण)
4. Dदहन

How does atomic radius change going down a group?

1. AIt decreases, then increases
2. BIt decreases
3. CIt increases
4. DIt stays the same

Why does the vapour pressure of a liquid increase as it is heated?

1. AThe molecules become heavier and press harder on the surface
2. BThe attractions between the molecules become stronger
3. CThe liquid's volume decreases and squeezes out vapour
4. DMore molecules have enough energy to escape into the gas phase

How many oxygen atoms are in one formula unit of calcium nitrate, Ca(NO₃)₂?

1. A6
2. B5
3. C2
4. D3

Which compound contains both ionic and covalent bonds?

1. ASodium sulfate, Na₂SO₄
2. BMethane, CH₄
3. CSodium chloride, NaCl
4. DWater, H₂O

समीकरण N₂ + 3H₂ → 2NH₃ में, अतिरिक्त हाइड्रोजन के साथ 1 mol N₂ से कितने ग्राम अमोनिया (17 g/mol) बन सकती है?

1. A34 g
2. B17 g
3. C28 g
4. D51 g