उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What is a horizontal row of the periodic table called?

1. AA family
2. BA block
3. CA group
4. DA period

Which mixture is a suspension?

1. AOxygen dissolved in water
2. BSalt dissolved in water
3. CSugar dissolved in water
4. DSand stirred into water

Which group of biological molecules includes fats, oils and cholesterol?

1. AProteins
2. BCarbohydrates
3. CLipids
4. DNucleic acids

According to the Brønsted–Lowry definition, what is an acid?

1. AA proton (H⁺) acceptor
2. BA proton (H⁺) donor
3. CAn electron pair donor
4. DA hydroxide ion donor

When a nucleus emits an alpha particle, how do its mass number and atomic number change?

1. AMass number falls by 4 and atomic number falls by 2
2. BMass number falls by 2 and atomic number falls by 4
3. CMass number stays the same and atomic number rises by 1
4. DNeither changes

On an energy diagram, the products are at a lower energy than the reactants. What kind of reaction is shown?

1. ANuclear
2. BEndothermic
3. CReversible only
4. DExothermic

A liquid has a density of 1.2 g/mL. What is the mass of 250 mL of this liquid?

1. A208 g
2. B30 g
3. C251.2 g
4. D300 g

In the fission reaction ²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + ? ¹n, how many neutrons are released?

1. A4
2. B2
3. C1
4. D3