Chemistry problems
- 1. Chemical composition of cement is
Options- A. Limestone and Clay
- B. Limestone, Clay and Gypsum
- C. Limestone and Gypsum
- D. Clay and Gypsum Also asked in: Bank Exams
Correct Answer: Limestone, Clay and Gypsum
- 2. A radio-active substance has a half life of six months. Three-fourth of the substance will decay in ______.
Options- A. Six months
- B. Ten months
- C. Twelve Months
- D. Twenty four months Also asked in: Bank Exams
Correct Answer: Twelve Months
- 3. Ozone is an ______ of oxygen.
Options- A. Allotrope
- B. Isotope
- C. Isobar
- D. Isotone Also asked in: Bank Exams
Correct Answer: Allotrope
- 4. Process of loosing electrons is known as _____.
Options- A. oxidation
- B. reduction
- C. radiation
- D. both oxidation and reduction Also asked in: Bank Exams
Correct Answer: oxidation
- 5. Anions are formed by _____.
Options- A. losing of electrons
- B. gaining of electrons
- C. gaining of neutrons
- D. losing of neutrons Also asked in: Bank Exams
Correct Answer: gaining of electrons
- 6. What is the chemical formula for Sodium Chloride (Salt)?
Options- A. NaCl2
- B. NaCl
- C. Na2Cl
- D. Na2C Also asked in: Bank Exams
Correct Answer: NaCl
- 7. What is an endothermic reaction?
Options- A. Reaction in which heat is released.
- B. Reaction in which heat is absorbed.
- C. Reaction in which neither heat is released nor absorbed.
- D. None of these Also asked in: Bank Exams
Correct Answer: Reaction in which heat is absorbed.
- 8. Which of the following is an ore of Aluminium?
Options- A. Galena
- B. Cryollite
- C. Cinnabar
- D. Epsom Salt Also asked in: Bank Exams
Correct Answer: Cryollite
- 9. Which of the following gas was released during Bhopal gas tragedy?
Options- A. Methyl isocyanate
- B. Sodium isothiocyanate
- C. Nitrogen isothiocyanate
- D. Potassium isothiocyanate Also asked in: Bank Exams
Correct Answer: Methyl isocyanate
- 10. Nylon threads are made of
Options- A. Polyester polymer
- B. Polyamide polymer
- C. Polyvinyl polymer
- D. Polysaccharide Also asked in: Bank Exams
Correct Answer: Polyamide polymer
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