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General Science MCQ
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Pure water freezes at a temperature:
Correct Option:
B
[ 32°F ]
Explanation: Ordinarily, the freezing point of water and melting point is 0°C or 32°F.
"Curie" is unit of:
Correct Option:
A
[ Radioactivity ]
Explanation: Curie (Ci): One of three units used to measure the intensity of radioactivity.
The original unit for measuring the amount of radioactivity was the curie (Ci)–first defined to correspond to one gram of radium-226.
The original unit for measuring the amount of radioactivity was the curie (Ci)–first defined to correspond to one gram of radium-226.
Which quantity is increased in step-down transformer?
Correct Option:
B
[ Current ]
Explanation: a step-down transformer the voltage is stepped down, or reduced, and the current is increased.
Which among the following is present in refrigerator?
Correct Option:
D
[ Chlorotluorocarbon ]
Explanation: Chlorotluorocarbons (CFCs) have recently been phased out and newer refrigerators will not contain CFCs. The use of CFCs was phased out by 2000 under the Montreal Protocol.
The "powerhouse" of cell is:
Correct Option:
C
[ Mitochondria ]
Explanation: Mitochondria are membrane-bound cell organelles that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Which metal is present in haemoglobin?
Correct Option:
A
[ Iron ]
Explanation: Iron is an essential element for blood production, and about 70 percent of your body's iron is in the red blood cells called hemoglobin.
Which one of the following animals is not "warm-blooded"?
Correct Option:
D
[ Toad ]
Explanation: frogs and toads are cold-blooded. This means their body temperatures change to match the temperatures of their environment.
The radioactive element used in heart-pacemakers is:
Correct Option:
C
[ Plutonium ]
Explanation: Plutonium 238 devices are used as heat sources in cardiac pacemakers and satellites.
An Obstetrician deals with:
Correct Option:
C
[ Pregnancy & child birth ]
Explanation: Obstetricians specialize in obstetrics, which deals with all aspects of pregnancy and childbirth, from prenatal care to postnatal care.
"Seahorse" is a:
Correct Option:
C
[ Fish ]
Explanation: Seahorse (Hippocampus) is a tiny fish that named for the shape of its head, which looks like the head of a tiny horse. There are at least 50 species of seahorses.
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