Explanation

The Metric System of Measurements uses the mass units: gram (g), kilogram (kg), and tonne (t). 1000 g = 1 kg. 1000 kg = 1 tonne.

Mass was first defined in 1795

Symbol: M

Explanation

Newton's second law of motion states that F = ma, or net force is equal to mass times acceleration.

The other name for Newton's second law is the law of force and acceleration.

Explanation

An n-type semiconductor results from implanting dopant atoms that have more electrons in their outer (bonding) shell than silicon. 

Explanation

In the given sentence the focus needs to be on the verb ‘trust’.

The preposition ‘in’ is commonly used to speak about a state, condition or abstract concept.

Explanation

Rearrange the meaning of KISTANPA

Pakistan

Pakistan is a country so, option A is the correct option

Explanation

On moving 100∘ clockwise. he faces in the direction of OB. On further moving 145∘ anticlockwise, he is facing the direction OC.

Clearly, OC makes an angle of (145∘−100∘) i.e. 45∘ with OA and so, the man faces the direction North-east.

Explanation

Ctrl + B = Bold

Ctrl+W: Close.

Ctrl+A: Select all.

Alt+Tab: Switch apps.

Alt+F4: Close apps.

Win+D: Show or hide the desktop.

Win+left arrow or Win+right arrow: Snap windows.

Win+Tab: Open the Task view.

Explanation

Hummingbirds are birds native to the Americas and constituting the biological family Trochilidae.

They are the smallest of birds, most species measuring 7.5–13 cm (3–5 in) in length.

Explanation

Neptune's color is blue.

This is because Neptune's methane atmosphere absorbs red and infrared light.

Explanation