Basic Science Practice Question and Answer
8 Q: Embryos of Tritium aestivum have a chromosome number?
1871 0604de8a0e147c16b2869ac67
604de8a0e147c16b2869ac67- 144false
- 263true
- 365false
- 467false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "63"
Q: The pigment that gives color to human skin is-
1871 05f86b534dcf12a01a141fc4f
5f86b534dcf12a01a141fc4f- 1Lysozymefalse
- 2Epidermisfalse
- 3Melanintrue
- 4Calaninfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Melanin "
Q: What is the coupling of primary and secondary coils in a transformer?
1861 05ef4495d2d6fc772f50b8ceb
5ef4495d2d6fc772f50b8ceb- 1Electricalfalse
- 2Mechanicalfalse
- 3Magnetictrue
- 4All thesefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Magnetic"
Explanation :
The secondary coil is also generating a magnetic field that is growing and shrinking just like the field in the primary coil. This coupling of magnetic energy between these two coils is called mutual induction.
Q: From which source is the list of countries emitting carbon dioxide based on carbon dioxide emissions?
1859 05f60443d80a26b7dab000d1c
5f60443d80a26b7dab000d1c- 1Burning of fossil fuelsfalse
- 2Cement Industryfalse
- 3Both of the abovetrue
- 4None of thesefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Both of the above"
Explanation :
This is a list of sovereign states and territories by carbon dioxide emissions due to certain forms of human activity, based on the EDGAR database created by European Commission and Netherlands Environmental Assessment Agency.
Q: Are secondary electrical devices?
1852 05ef448bd7c1ec61320b65029
5ef448bd7c1ec61320b65029- 1Depleting torquesfalse
- 2Containing torquefalse
- 3Damping torquefalse
- 4All thesetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "All these"
Q: Rust on iron?
1837 05f9101807793eb35d72c610c
5f9101807793eb35d72c610c- 1ferric oxidefalse
- 2Hydrated ferrous and ferric oxidefalse
- 3Alkali ferrous and ferric carbonatefalse
- 4Because of all of the abovetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Because of all of the above"
Q: Select the odd from the following.
1830 05f8fecfb7793eb35d72718c3
5f8fecfb7793eb35d72718c3- 1J.L .Baird — Televisionfalse
- 2J. Parkinson — Penicillinfalse
- 3James Watt — Steam Enginetrue
- 4A. G. Bell — Telephonefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "James Watt — Steam Engine "
Q: Which of the following was the first B vitamin discovered in 1897?
1823 064c38a8666a41f484c1cff4c
64c38a8666a41f484c1cff4c- 1Folatefalse
- 2Biotinfalse
- 3Riboflavinfalse
- 4Thiaminetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Thiamine"
Explanation :
1. The first vitamin discovered in 1897 was thiamine, also known as vitamin B1.
2. Thiamine was discovered by Dutch physician Christiaan Eijkman.
3. Vitamin B1 helps body cells convert carbohydrates into energy and maintain proper functioning of the heart, muscles and digestive system.

