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A metallic sphere floats in an immiscible mixture of water (ρW = 10^3 kg/m^3) and a liquid (ρL = 13.5 x 10^3) such that its (4/5)th volume is in water and (1/5)th volume is in the liquid. Find the density of metal. (A) 4.5 x 10^3 kg/m^3 (B) 4.0 x 10^3 kg/m^3 (C) 3.5 x 10^3 kg/m^3 (D) 1.9 x 10^3 kg/m^3

Total upthrust = weight of the metal sphere Hence, {(4/5)V}ρWg + {(1/5)V}ρLg = (Vρm)g ρm = (4/5) x 103 + (1/5) x 13.5 x 103... View Article

Which of the following ions forms a hydroxide that is highly soluble in water? (A) K^+ (B) Zn^2+ (C) Ni^2+ (D) Al^3+

K+ K+ ion will form most water soluble hydroxide since it is the most reactive of these metals and therefore forms strong alkali KOH which... View Article

Non keratinised stratified epithelium occurs in (A) Vagina and cervix (B) Body cavity and anal cavity (C) Vagina, cervix and buccal cavity (D) Vagina, cervix, buccal cavity and anal cavity

Vagina, cervix, buccal cavity and anal cavity Non-keratinised stratified epithelium: This type of epithelial tissue is the tissues that cover... View Article

Man does not live by ________ alone (A) Food (B) Bread (C) Meals (D) Diet

Bread Man does not live by bread alone Hence, the correct option is (B)... View Article

Solar radiation flux is usually measured with the help of which of the following instrument? (A) Anemometer (B) Pyranometer (C) Sunshine recorder (D) All of the above

Pyranometer Solar radiation flux is usually measured with the help of an instrument known as pyranometer. Its name is derived from Greek word... View Article

The bleaching properties of H2O2 are due to its (A) Acidic nature (B) Basic nature (C) Oxidising nature (D) Reducing nature

Oxidising nature The bleaching action is due to the oxidising nature. H2O2 → H2O + [O] Coloured matter + [O] → Colourless matter... View Article

BCl3 does not exist as dimer but BH3 exists as dimer (B2H6) because (A) chlorine is more electronegative than hydrogen (B) there is pπ – pπ back bonding in BCl3 and BH3 does not contain such multiple bonding (C) large sized chlorine atoms do not fit in between the small boron atoms where as small sized hydrogen atoms get fitted in between boron atoms (D) none of the above

large-sized chlorine atoms do not fit in between the small boron atoms whereas small-sized hydrogen atoms fit between boron atoms Hydrogen is of... View Article

What are petals? Why are they generally coloured?

Petals are coloured, modified leaves that surround the reproductive parts of flowers. They are brightly coloured to attract insects for... View Article

Write the opposite of each of the following. Failure

The word which is opposite of failure is success... View Article

You have Rs 12000 saved amount and wants to invest it in two schemes yeilding 10% and 15% interest. How each schemes so that you should get overall 12% interest.

Let Rs x be the amount to be saved at 10% Let Rs y be the amount to be saved at 15% From the question, given that, x + y = 12000 ........ (1)... View Article

Boron is diagonally related to (A) boron (B) aluminium (C) magnesium (D) silicon

Silicon Boron is diagonally related to silicon. Boron and silicon are both semiconductors, form halides that are hydrolysed in water and form... View Article

Tendons and ligaments are specialized types of (A) Nervous tissue (B) Epithelial tissue (C) Muscular tissue (D) Fibrous connective tissue

Fibrous Connective Tissue Tendons and ligaments are the specialized types of fibrous connective tissue since they consists of collagen fibres... View Article

State any three organisational objectives of management

Organisational Objectives: Management is accountable for establishing and attaining objectives for the company. It has to deliver a variety of... View Article

Give reasons for the following (A) gases can be compressed easily (B) liquids can flow easily (C) we need to classify things (D) pure substance have fixed melting or boiling points (E) electricity is not considered a matter

(A) In a gas, spaces between the molecules are large and interaction between the molecules is low. Hence, it is easier to compress them by... View Article

Sectors are classified into public and private sectors on the basis of (A) Employment conditions (B) The nature of economic activity (C) Ownership of enterprises (D) Number of workers employed in the enterprise

Ownership of enterprises The industrial sectors are classified into public and private sectors on the basis of ownership of enterprises. The... View Article

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