Mix Test - 8

Fluorosis is the health effects of excess fluoride in drinking water.

Ingestion of excess fluoride, most commonly in drinking water affects the teeth and bones. It results in major health disorders like dental fluorosis, skeletal fluorosis and non-skeletal fluorosis.

Hence, the correct option is (A).

Gasoline comes from Petroleum.

Petroleum is a fossil fuel mainly found beneath the Earth's surface. It is the source of the chemicals used to make gasoline, lubricating oils, plastics, and many other products.

Hence, the correct option is (B).

Calcium Dependent Kinases (CDKs) have the ability to control cell cycle activities during cell division.

Calcium-dependent protein kinases (CDPKs) are key actors of plant signaling that convey calcium signals into physiological responses by phosphorylating various substrates including ion channels, transcription factors and metabolic enzymes.

Hence, the correct option is (A).

This cell is the longest in the human body Nerve cells.

In the human body, the nerve cell is the longest cell. Nerve cells are also called neurons that are found in the nervous system. They can be up to 3 feet long.

Hence, the correct option is (B).

Such organisms, whose cells lack a nuclear membrane, are called prokaryotes.

Organisms with cells having a nuclear membrane are called eukaryotes. Prokaryotic cells also lack most of the other cytoplasmic organelles present in eukaryotic cells. Many of the functions of such organelles are also performed by poorly organised parts of the cytoplasm.

Hence, the correct option is (B).

In humans, implantation occurs during the mid-secretory phase, between cycle days (CD) 20 and 24, or 6–10 days after ovulation (Blesa et al. 2014; Donaghay and Lessey 2007; Psychoyos 1973), which is a temporally framed period called the window of implantation (WOI). At this stage of prenatal development, the concept is called a blastocyst.

Hence, the correct option is (C).

Hydrogen gas obtained from natural gas is used for production of fertilizers.

Fertilizer plants extract hydrogen from natural gas and mix it with nitrogen from the air to create ammonia, which farmers use to boost crop growth. Hydrogen gas is produced when natural gas is extracted from petroleum. In the fields, hydrogen gas is utilized as a fertilizer. 

Hence, the correct option is (B).

Wire made from nylon fibre is the strongest.

It is exceptionally strong, relatively resistant to acidification and moisture absorption, long lasting, resistant to chemicals, elastic and easy to wash. Nylon is often used as a substitute for lower strength metals.

Hence, the correct option is (A).

Force is defined as a push or pulls exerted on one object by another.

Force measured in Newtons (denoted N, where 1 N is the force required to give a 1 kg mass an acceleration of 1 m/s²).

Hence, the correct option is (B).

CNG is Compressed Natural Gas.

CNG (Compressed Natural Gas) is a mixture of hydrocarbons consisting of approximately 80 to 90 percent methane in gaseous form. Because of its low energy density, it is compressed to pressure of 200 to 250 Kg/cm² (to enhance the vehicle on-board storage in a cylinder), hence the name Compressed Natural Gas.

Hence, the correct option is (B).