उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

Which property is typical of nonmetals?

1. AThey are poor conductors of heat and electricity
2. BThey are shiny and easily bent into wires
3. CThey easily lose electrons to form positive ions
4. DThey are all solids at room temperature

आयन क्या है?

1. Aविद्युत आवेश वाला परमाणु या परमाणुओं का समूह
2. Bवह परमाणु जिसके नाभिक में अन्य परमाणुओं की तुलना में अतिरिक्त न्यूट्रॉन हैं
3. Cबिना इलेक्ट्रॉनों वाला कण
4. Dदो समान परमाणुओं से बना अणु

What are enzymes?

1. ABiological catalysts, usually proteins
2. BSugars that store energy in the liver
3. CFats that form most of the cell membrane
4. DMinerals that build bone

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

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

Which type of bond holds the two atoms together in a nitrogen molecule, N₂?

1. AAn ionic bond
2. BA single covalent bond
3. CA double covalent bond
4. DA triple covalent bond

Which measurement has three significant figures?

1. A0.00560
2. B5.0006
3. C56
4. D0.0056

Which 1-litre solution lowers the freezing point of water the most?

1. A1 M NaCl
2. B1 M CaCl₂
3. C1 M glucose
4. D0.5 M NaCl

Which list puts fluorine, chlorine and bromine in order of increasing electronegativity?

1. AF < Cl < Br
2. BBr < Cl < F
3. CBr < F < Cl
4. DCl < Br < F