Chemistry - Mock Test 45

Question 441

Which of the following is the lightest metal ?

A) Mercury B) Silver C) Lithium D) Lead

---

No Details

Question 442

Which of the following is the main ingredient of cement?

A) Limestone B) Silica Clay C) Gypsum D) Ash

---

No Details

Question 443

Nylon is prepared from?

A) Adipic acid and hexametheylene diamine B) Ethylene glycol and nitric acid C) Hexametheylene diamine and phthalic acid D) Ethylene clycol and adipic acid

---

No Details

Question 444

Phosphorus is mainly extracted from?

A) Sand B) Ash C) Bone ash D) Fertiliser

---

No Details

Question 445

The oil used in the froth floatation process is?

A) Coconut oil B) Olive oil C) Kerosene D) Pine Oil

---

No Details

Question 446

The material that can be deformed permanently by heat and pressure is called a?

A) Thermoset B) Thermoplastic C) Chemical Compound D) Polymer

---

No Details

Question 447

Mass number of a nucleus is?

A) the sum of the number of neutrons and protons B) always more than the atomic weight C) always less than its atomic number D) None of these

---

No Details

Question 448

Due to rusting the weight of iron?

A) decreases B) increases C) remains the same D) uncertain

---

No Details

Question 449

When water is added to anhydrous white copper sulphate, the color will change to?

A) Yellow B) Green C) Blue D) Red

---

No Details

Question 450

Heavy metal pollution of water is caused by?

A) Acid Plants B) Paints C) Wood Burning D) Domestic Sewage

---

No Details