उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

Carbon has an atomic mass of 12. What is the mass of 1 mole of carbon atoms?

1. A6 g
2. B24 g
3. C1 g
4. D12 g

What is the normal pH range of human arterial blood?

1. A6.35 to 6.45
2. B7.85 to 7.95
3. C7.00 to 7.10
4. D7.35 to 7.45

समुद्र तल पर शुद्ध पानी किस तापमान पर उबलता है?

1. A50 °C (122 °F)
2. B37 °C (98.6 °F)
3. C100 °C (212 °F)
4. D0 °C (32 °F)

What are London dispersion forces?

1. AWeak, temporary attractions caused by shifting electrons in molecules
2. BForces that hold protons together in the nucleus
3. CAttractions between a hydrogen atom and a metal ion
4. DStrong bonds formed by transferring electrons

Which nuclear process powers the Sun?

1. AFusion of hydrogen nuclei to form helium
2. BAlpha decay of helium
3. CFission of uranium into smaller nuclei
4. DCombustion of hydrogen gas with oxygen in its core

When the diaphragm contracts and the chest cavity gets bigger, what happens to the air pressure inside the lungs?

1. AIt falls, so air flows in
2. BIt falls, so air flows out
3. CIt does not change
4. DIt rises, so air flows in

एक धातु अम्ल से अभिक्रिया करती है और एक गैस निकलती है जो चटकने की आवाज़ (स्क्वीकी पॉप) के साथ जलती है। यह कौन-सी गैस है?

1. Aहाइड्रोजन
2. Bनाइट्रोजन
3. Cऑक्सीजन
4. Dकार्बन डाइऑक्साइड

Methane (CH₄) has four bonding pairs and no lone pairs on carbon. What is its shape?

1. ATetrahedral
2. BSquare planar
3. CTrigonal pyramidal
4. DBent