Science CBSE 2017 - Score Predictor Test - Class 10 MCQ

Hydrocarbon with molecular formula C₄H₁₀ has

Which of the following compounds contain carboxylic group -

An organic compound A of molecular formula C₂H₆O on oxidation gives an acid B with the same number of carbon atoms in the molecule as A. Compound A is of the used for sterilization of skin by doctors name compound A and B

The boiling point of alcohols goes on increasing with increasing molecular weight.

How does the valency vary in going down a group?

What is the nature of an element having atomic number 20?

Match the following with correct response. 
(1) Alkali metals 
(2) Alkaline earth metal 
(3) Halogen 
(4) Inert gas 

(A) Magnesium 
(B) Krypton 
(C) chlorine 
(D) Sodium

Horizontal rows in a periodic table are called -

Which of the following statement is not a correct statement about the trends when going from left to right across the periodic table.

Which type of compound is formed by the elements of group 1 and group 7?

The specific scientific term for the release of ovum from ovary into body cavity is

Which of these is not a sexually transmitted disease?

Where does the embryo develop in a human female?

Match the following with correct response. 
(1) Spirogyra
(2) Hydra 
(3) Plasmodium 
(4) Rhizopus 

(A) Budding 
(B) Spore Formation 
(C) Multiple fission 
(D) Fragmentation

Which hormone causes devlopment of mammary gland in females

Which of the following method of reproduction induces over-crowding in plants?

Characters that are transmitted from parents to offspring are present in -

What is the another name for tissue culture?

What are the carriers of factor?

Which of these is a fossil that had wings and teeth?

Statement A : genetic recombination is one of the sources of variation. 

Statement B : Natural selection may lead to the evolution of a new group.

What will be the sex of the embryo if an egg is fertilized by a sperm having a ‘22 + X’ composition?

Match the following with correct response. 
(1) Transmission of characters from parent to offspring 
(2) Differences among the individual of same species 
(3) Branch of science deals with heredity and variation 
(4) Development of new organism by modifications in pre-existing ones 

(A) Hereditary 
(B) Genetics 
(C) Variation 
(D) Evolution

Which of the following is not true about Eukaryotes?

How are the two strands in a DNA molecule held together?

Name the disease which is likely to be caused due to ozone depletion.

‘Hug the trees movement’ was the result of grass root level effort to