21)

Which of the following can be used as a catalyst in Hydrogenation reaction?

SSC CGL 2020

A)

Barium

B)

Iron

C)

Tungsten

D)

Palladium

22)

Which of the following pigments causes the red colour in onions?

SSC CHSL 2021

A)

Carotenoids

B)

Anthocyanins

C)

Chlorophylls

D)

Betalains

23)

Which of the following chemicals is responsible for the yellow colour in urine?

SSC CHSL 2021

A)

Albumin

B)

Urobilin

C)

Bilirubin

D)

Creatinine

24)

Which chemical reaction takes place during the cooking of meat?

SSC CHSL 2021

A)

The Gattermann reaction

B)

The Maillard reaction

C)

The Swartz reaction

D)

The Finkelstein reaction

25)

Which one of the following is NOT a halogen element?

SSC CHSL 2021

A)

Iodine

B)

Selenium

C)

Fluorine

D)

Astatine

26)

Alkali metals react vigorously with cold water resulting in the displacement of ___________.

SSC CHSL 2021

A)

hydrogen

B)

oxygen

C)

carbon dioxide

D)

nitrogen

27)

Which of the following metals reacts with the moist carbon dioxide in the air and slowly loses its shiny brown surface and gains a green coat?

SSC CHSL 2021

A)

Silver

B)

Zinc

C)

Iron

D)

Copper

28)

Which of the following is a weak electrolyte?

SSC CHSL 2021

A)

Calcium chloride

B)

Sodium chloride

C)

Ethanoic acid

D)

Magnesium sulphate

29)

Amino acids are often referred to as the building blocks of _______.

SSC CHSL 2021

A)

sugar

B)

carbohydrates

C)

fats

D)

proteins

30)

Primarily, an ant’s sting has which of the following?

SSC CHSL 2021

A)

Magnesium hydroxide

B)

Tartaric acid

C)

Citric acid

D)

Formic acid