### What is the mass of precipitate formed when x mL of solution is mixed with another

What is the mass of precipitate formed when 50 mL of 16.9% solution of AgNO₃ is mixed with 50 mL of 5.8% NaCl Solution? (Ag=107.8, N=14, O=16, Na=23, Cl=35.5) Options (a) 28 g (b) 3.5 […]

### If avagadro number is changed what changes

If avagadro number is changed from 6.022 x 10²³ mol⁻¹ to 6.022 x 10²⁰ mol⁻¹, this would change Options (a) the definition of mass in units of grams (b) the mass of one mole of […]

### The number of water molecules is maximum in

The number of water molecules is maximum in Options (a) 1.8 molecules of water (b) 1.8 gram of water (c) 18 gram of water (d) 18 moles of water Correct Answer: 18 moles of water […]

### Magnesium carbonate of x g decomposes. What is the percentage of purity

20.0 g of a magnesium carbonate sample decomposes on heating to give CO₂ and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample? Options (a) 75 (b) 96 […]

### What is the molar ratio of mixture of gases given the ratio of gases

A mixture of gases contains H₂ and O₂ gases in ratio of 1:4(w/w). What is the molar ratio of the two gases in the mixture? Options (a) 4:1 (b) 16:1 (c) 2:1 (d) 1:4 Correct […]

### When x g of magnesium burnt with oxygen what is left

1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel. Which reactant is left in excess and how much? At wt Mg=24, O₂=16) Options (a) Mg, 0.16g (b) O₂, 0.16g (c) […]

### When x litres hydrogen and chlorine are mixed, moles of HCl is

When 22.4 litres of H₂(g) is mixed with 11.2 litres of Cl₂(g), each at S.T.P, the moles of Hcl(g) formed is equal to Options (a) 1 mol of Hcl(g) (b) 2 mol of Hcl(g) (c) […]

### Constant Characteristic of living organism

Which one is a constant characteristic of living organisms? Options (a) Adaptation (b) Metabolism (c) Homeostasis (d) Reproduction Correct Answer: Homeostasis Explanation: Although Reproduction and Metabolism are characteristics of living organism, the characteristics which maintains […]

### In five kingdom classification, Chlamydomonas and Chlorella have been included in

In the five kingdom classification, chlamydomonas and Chlorella have been included in Options (a) Protista (b) Algae (c) Plantae (d) Monera Correct Answer: Monera Explanation: No explanation available. Be the first to write the explanation […]

### Isolated metabolic reaction outside the body of an organism performed in test tube is

Metabolic reactions can be demonstrated outside the body in cell free systems. An isolated metabolic reaction outside the body of an organism, performed in as test tube is Options: Living thing Non- Living Thing Either […]

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