उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

Which group contains the alkaline earth metals, such as magnesium and calcium?

1. AGroup 18
2. BGroup 2
3. CGroup 1
4. DGroup 17

What colour does blue litmus paper turn in an acid?

1. ARed
2. BPurple
3. CGreen
4. DBlue (no change)

What is radioactivity?

1. AThe release of heat and light when fuels burn in air
2. BThe flow of electrons through a metal wire
3. CThe glow produced by any hot object
4. DThe release of radiation by unstable atomic nuclei

To which family of organic compounds does ethanol, C₂H₅OH, belong?

1. AAlkanes
2. BEsters
3. CCarboxylic acids
4. DAlcohols

Which is larger, a sodium atom (Na) or a sodium ion (Na⁺)?

1. AThe sodium ion
2. BThey are the same size
3. CThe sodium atom
4. DIt depends on the temperature

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

1. ABeta particles (fast electrons)
2. BX-rays
3. CAlpha particles
4. DGamma rays

When water boils, what is overcome?

1. AHydrogen bonds between water molecules
2. BThe ionic bonds between H⁺ and O²⁻
3. CThe covalent O–H bonds inside each molecule
4. DThe forces holding the oxygen nucleus together

इनमें से कौन-सा दुर्बल अम्ल है?

1. Aऐसीटिक अम्ल (सिरके में)
2. Bसल्फ़्यूरिक अम्ल
3. Cनाइट्रिक अम्ल
4. Dहाइड्रोक्लोरिक अम्ल