General Science Questions Practice Question and Answer
8 Q: The ozone layer absorbs
976 05db92951889f1c0878bb0024
5db92951889f1c0878bb0024- 1infrared radiationfalse
- 2microwavesfalse
- 3radio wavefalse
- 4ultraviolet raystrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "ultraviolet rays"
Q: Which of the following carbohydrates is a polysaccharide? 1235 05b5cc690e4d2b4197774c42c
5b5cc690e4d2b4197774c42c- 1Fructosefalse
- 2Cellulosetrue
- 3Glucosefalse
- 4Sucrosefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Cellulose"
Explanation :
Answer: B) Cellulose Explanation: Carbohydrates are also called as saccharides are molecular compounds made from just three elements: carbon, hydrogen and oxygen. Carbohydrates are: * a source of energy for the body e.g. glucose and a store of energy, e.g. starch in plants * building blocks for polysaccharides (giant carbohydrates), e.g. cellulose in plants and glycogen in the human body * components of other molecules eg DNA, RNA, glycolipids, glycoproteins, ATP Types: 1. Monosaccharides (e.g. glucose) and 2. Disaccharides (e.g. sucrose) are relatively small molecules. They are often called sugars. 3. Other carbohydrate molecules are very large called Polysaccharides such as starch and cellulose.
Q: What is an ionic bond?
1773 05d7761b8724a145aeb53c9fb
5d7761b8724a145aeb53c9fb- 1An ionic bond is formed by sharing of electrons between two atoms.false
- 2It is a bond formed by the transfer of electrons from one atom to another.true
- 3Both A and B are correctfalse
- 4None of the abovefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "It is a bond formed by the transfer of electrons from one atom to another."
Q: Which of the following is an air pollutant? 1156 05b5cc5ffe4d2b4197774b3ef
5b5cc5ffe4d2b4197774b3ef- 1Sulphur dioxidetrue
- 2Ozonefalse
- 3Water vapourfalse
- 4Nitric oxidefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Sulphur dioxide"
Explanation :
Answer: A) Sulphur dioxide Explanation: Air pollutants are solid particles, gases, and liquid droplets in the air that can adversely affect ecosystems and the health of humans. Major ambient air pollutants include toxic metals, polycyclic aromatic hydrocarbons, benzene, particulate matter (PM), nitrogen oxides, sulfur oxides, carbon monoxide, and ozone. Power plants, factories, and vehicle and air traffic are the most important anthropogenic sources of air pollution. In addition, natural sources such as wildfires and volcanic activity contribute to ambient air pollution.
Q: Which of the following statements about water is false? 1691 05b5cc601e4d2b4197774b462
5b5cc601e4d2b4197774b462- 1There is extensive intramolecular hydrogen bonding in the condensed phase.true
- 2Water is oxidized to oxygen during photosynthesis.false
- 3Ice formed by heavy water sinks in normal water.false
- 4Water can act both as an acid and as a base.false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "There is extensive intramolecular hydrogen bonding in the condensed phase."
Explanation :
Answer: A) There is extensive intramolecular hydrogen bonding in the condensed phase. Explanation: Water possess intermolecular hydrogen bonding in the condensed phase. Hence, the given statement 'There is extensive intramolecular hydrogen bonding in the condensed phase.' about water is FALSE.
Q: Which of the following does not influence haemoglobin saturation? 1056 05b5cc695e4d2b4197774c4f1
5b5cc695e4d2b4197774c4f1- 1Nitric oxidetrue
- 2Carbon dioxidefalse
- 3Temperaturefalse
- 4DPGfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Nitric oxide"
Explanation :
Answer: A) Nitric oxide Explanation:
Q: Who is regarded as father of modern chemistry ? 1462 05c2dbb7eaea81766da94cac5
5c2dbb7eaea81766da94cac5- 1Ruterfordfalse
- 2Einsteinfalse
- 3Lavoisiertrue
- 4C V Ramanfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Lavoisier"
Q: Galvanised iron sheets have a coating of
1085 15d777a30315eb75b1463e6a7
5d777a30315eb75b1463e6a7- 1leadfalse
- 2chromiumfalse
- 3zinctrue
- 4tinfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice