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- Question
Strength of concrete increases with
Options- A. increase in fineness of cement
- B. decrease in size of aggregate
- C. increase in water cement ratio
- D. decrease in curing time
- Correct Answer
- increase in water cement ratio
ExplanationStrength of concrete increases with increase in water cement ratio as the strength of the cement is directly proportional to water cement ratio.
- 1. Curdling of milk is an example of
Options- A. Inversion
- B. Denaturation
- C. Hydrolysis
- D. Coagulation Discuss
- 2. An acid can be defined as Discuss
- 3. An atom that loses or gains electrons is called
Options- A. Proton
- B. Ion
- C. Isotope
- D. Neutron Discuss
- 4. Which type of bond is found in sodium bromide?
Options- A. Ionic
- B. Covalent
- C. Polar covalent
- D. None of the above Discuss
- 5. Which of the following gases is present under pressure in soft drinks?
Options- A. Nitrous oxide
- B. Oxygen
- C. Nitrogen
- D. Carbon dioxide Discuss
- 6. Which of the following can be used as lamp oil?
Options- A. Lipids
- B. Carbohydrates
- C. Proteins
- D. Nucleic acids Discuss
- 7. Stoichiometry is based on
Options- A. Law of conservation of energy
- B. Law of conservation of mass
- C. Newton's 1st law
- D. Kepler's law Discuss
- 8. Alcohol is a stimulant. true or false
Options- A. TRUE
- B. FALSE Discuss
- 9. Which compound is an electrolyte?
Options- A. HCl
- B. NaCl
- C. HBr
- D. All of the above Discuss
- 10. What is a normal pH level in blood?
Options- A. 7.35 - 7.45
- B. 7.45 - 7.55
- C. 7.6 - 7.7
- D. 7 - 7.10 Discuss
Chemistry problems
Search Results
Correct Answer: Coagulation
Explanation:
Coagulation :: The action or process of a liquid, especially blood, changing to a solid or semi-solid state.
Correct Answer: An acid can be defined as a molecule or other species which can donate a proton or accept an electron pair in reactions (OR) A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind
Correct Answer: Ion
Explanation:
An atom that loses or gains electrons is called as ion. Gaining of electron is negative charge and is called as Anion and lossing of eectron is called Cation.
Correct Answer: Ionic
Correct Answer: Carbon dioxide
Explanation:
Carbon dioxide is present under pressure in soft drinks.
Correct Answer: Lipids
Correct Answer: Law of conservation of mass
Explanation:
Stoichiometry is a branch of chemistry deals with the calculations on reactants and products. It is based on the Law of conservation of mass where total mass of reactants is equal to total mass of products.
Correct Answer: FALSE
Explanation:
Alcohol is a drug.
Correct Answer: All of the above
Explanation:
A substance that dissociates into ions in solution and acquires the capacity to conduct electricity. Sodium, potassium, chloride, calcium, and phosphate are examples of electrolytes, informally known as lytes.
Correct Answer: 7.35 - 7.45
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