उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

Which electrons take part in chemical bonding?

1. AThe electrons closest to the nucleus
2. BThe valence (outermost) electrons
3. CAll electrons take part equally
4. DOnly the electrons in the first shell

Boyle's law describes the relationship between which two properties of a gas, at constant temperature?

1. APressure and temperature
2. BPressure and volume
3. CVolume and temperature
4. DMass and volume

परमाणु का कौन-सा कण धनावेशित होता है?

1. Aन्यूट्रॉन
2. Bप्रोटॉन
3. Cइलेक्ट्रॉन
4. Dफ़ोटॉन

What is the oxidation number of an element in its uncombined (elemental) form, such as Fe or O₂?

1. A0
2. B−1
3. CIt equals the group number
4. D+1

कैल्शियम (Ca²⁺) और क्लोरीन (Cl⁻) के बीच कौन-सा यौगिक बनता है?

1. ACa₂Cl₃
2. BCaCl
3. CCa₂Cl
4. DCaCl₂

Which measurement has three significant figures?

1. A56
2. B0.00560
3. C5.0006
4. D0.0056

J.J. Thomson's cathode ray experiments led to which discovery?

1. AAtoms have a dense, positively charged nucleus
2. BAtoms contain small, negatively charged particles
3. CThe nucleus contains uncharged neutrons
4. DElectrons occupy fixed energy levels

An element in period 3 forms an oxide with the formula X₂O₃. Which element is X?

1. ASodium
2. BPhosphorus
3. CMagnesium
4. DAluminium