उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What is oxidation, in terms of electrons?

1. AGain of neutrons
2. BLoss of electrons
3. CLoss of protons
4. DGain of electrons

What is a dilute solution?

1. AOne in which the solute has reacted with the solvent
2. BOne with a large amount of solute in a little solvent
3. COne with no solvent at all
4. DOne with a small amount of solute in a lot of solvent

What are the building blocks of carbohydrates such as starch?

1. AFatty acids joined to a glycerol molecule
2. BNucleotides
3. CAmino acids
4. DMonosaccharides (simple sugars) such as glucose

सोडियम परमाणु (11 इलेक्ट्रॉन) का इलेक्ट्रॉन विन्यास क्या है?

1. A8, 2, 1
2. B2, 8, 2
3. C2, 9
4. D2, 8, 1

Why can a very high fever disrupt the body's chemical reactions?

1. AHigh temperatures remove the water from blood
2. BHigh temperatures make every enzyme work faster without any limit
3. CHigh temperatures turn enzymes into fats
4. DHigh temperatures can change the shape of enzymes so they stop working

What does Avogadro's law state?

1. AEqual masses of all gases contain equal numbers of molecules under any conditions
2. BOne mole of any gas has a mass of 22.4 g
3. CEqual volumes of gases at the same temperature and pressure contain equal numbers of molecules
4. DThe pressure of a gas doubles when its temperature is halved

Why are the radioactive tracers used for medical imaging usually chosen to have short half-lives?

1. AShort half-life isotopes are not radioactive
2. BThey stay active for many years, so a single dose can be used for every future scan
3. CThey give a strong signal for imaging but leave the body's tissues exposed only briefly
4. DThey emit only alpha particles, which are harmless inside the body

अभिक्रिया 2SO₂ + O₂ ⇌ 2SO₃ साम्य पर पहुँचती है। साम्य पर क्या सही है?

1. Aपात्र में केवल उत्पाद मौजूद हैं
2. Bअग्र और प्रतीप अभिक्रियाएँ समान दर से चलती रहती हैं
3. Cअभिकारकों और उत्पादों की सांद्रताएँ बराबर होनी चाहिए
4. Dदोनों अभिक्रियाएँ पूरी तरह रुक गई हैं