Q. Which one of the following is the mechanism of action of oral contraceptive pills?
1) They kill the egg
2) They kill the sperm
3) They kill the zygote
4) They inhibit the release of an egg
Q. Which one of the following statements is not correct?
1) Most carbon compounds are good conductors of electricity
2) Bonding in organic compounds is covalent
3) Graphite is used as a lubricant
4) Diamond is an allotrope of carbon
Q. Which one of the following statements about fertilizers is not correct?
1) Urea is a phosphorous-containing fertilizer
2) Application of fertilizer to the soil increases the fertility of the soil
3) Urea can be prepared by the action of ammonia and carbon dioxide under high pressure and at high temperature
4) Urea contains more nitrogen than other fertilizers
Q. Which one of the following is not a pigment?
1) Zinc oxide
2) Chalk
3) White lead
4) Silica
Q. Which one of the following is the colour of hydrogen gas?
1) Light yellow
2) Orange
3) Black
4) Colourless
Q. Which one of the following allotropes of carbon is isomorphous with crystalline silicon?
1) Coke
2) Diamond
3) Graphite
4) Coal
Q. Which one of the following is not an example of a redox reaction?
1) AlCl3+3H2O → Al(OH)3+ 3HCl
2) 2NaH → 2NA + H2
3) 4Fe + 3O2 → 2Fe2O3
4) CuSO4 + Zn → Cu + ZnSO4
Q. For an element with atomic number 35, which one of the following will be the correct number of electrons in its valence shell based on Bohr's model of an atom?
1) 1
2) 3
3) 5
4) 7
Q. A sound wave has a frequency of 1 kHz and a wavelength of 50 cm. How long will it take to travel 1 km?
1) 5 s
2) 4 s
3) 3 s
4) 2 s
Q. The energy possessed by a body due to its change in position or shape is called -
1) thermal energy
2) potential energy
3) kinetic energy
4) electric energy
Fashion design is a dynamic and creative field that offers innovative career openings for those with a passion for style, creativity, and invention. This composition will explore the colorful job prospects in the fashion design assiduity, the original hires one can anticipate, and punctuate some o →
Foundation Date: December 8, 1991 Headquarters: The Republic of Belarus Executive Secretaries: Sergei Lebedev Member Countries: 12 Commonwealth of Independent States (CIS) was established on December 8, 1991, and the leaders of the Republic of Belarus, the Russian Federation, and Ukraine signed an a →
In 2009, an unknown programmer by the name of Satoshi Nakamoto put forward a whitepaper that proposed a creation of new form of digital currency - cryptocurrency. Cryptocurrency functions the same way as regular currencies do in that its used as a means of exchange, unit of account and a store of va →
Headquarter: New Delhi Function and Objective of the Organization: The Food Safety and Standards Authority of India (FSSAI)has been established under Food Safety and Standards Act, 2006 which consolidates various acts & orders that have hitherto handled food-related issues in various Ministries →
If you contribute your content to our site. Please mail us your content to editor@onlinegk.net